/C O R R E C T I O N -- comScore, Inc./

In the news release, comScore (Nasdaq: SCOR) Clarifies 2008 Guidance,
issued earlier today by comScore, Inc. over PR Newswire, we are advised by the
company that in the table titled "Reconciliation from GAAP Net Income to Net
Income excluding unusual non-operating items, Adjusted Net Income and Adjusted
EBITDA (Guidance)," in the second column, under the heading "Three Months
Ended March 31, 2007," in the line item "EPS" the number should read "$0.00"
rather than "$0.82" and in the line item "Non-GAAP EPS," the number should
read "$0.00" rather than "$0.21" as originally issued inadvertently.

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comScore Clarifies 2008 Guidance
RESTON, Va., Feb. 8 /PRNewswire-FirstCall/ -- comScore, Inc.
(Nasdaq: SCOR) is issuing the following supplemental information in order to
clarify any misperceptions resulting from the guidance for the first quarter
and full year 2008 provided in the company's earnings press release issued on
February 7, 2008. In addition, comScore is clarifying such guidance as
compared to estimates of First Call and the consensus estimates of research
analysts that cover comScore.

The table shown below provides a comparison of comScore's 2008 guidance
and First Call and research analyst consensus estimates of financial metrics
not affected by the company's tax valuation allowance in order to help
investors use a more consistent comparison that is not affected by different
tax rate assumptions:

1Q08
($ millions) comScore Guidance Third Party Estimates
Revenue $25.9 - $26.2 $25.4 (a)
Adjusted EBITDA $5.1 - $5.4 $5.2 (b)
Non-GAAP EPS $0.14 - $0.17 $0.16 (a)

2008
($ in millions) comScore Guidance Third Party Estimates
Revenue $112.2 - $113.2 $112.6 (a)
Adjusted EBITDA $25.4 - $26.4 $26.4 (b)
Non-GAAP EPS $0.76 - $0.80 $0.79 (a)

Source: a) First Call; b) Research analysts' consensus

A reconciliation of first quarter and full year 2008 guidance provided by
the company in the tables above to the corresponding GAAP financial guidance
of the company is provided below.
For the full-year 2008, comScore is projecting GAAP net income of $10.5
million to $11.5 million. The company is projecting GAAP EPS for the
full-year 2008 of $0.35 to $0.38 per share on approximately 30.2 million fully
diluted shares.
For the purposes of this supplemental press release, comScore is revising
its definition of non-GAAP adjusted net income to exclude the additional
income tax provision projected for 2008 resulting from the valuation allowance
reversal. On this basis, comScore is forecasting non-GAAP adjusted net income
for the full-year 2008 of approximately $23.4 million to $23.7 million. The
company is forecasting adjusted EBITDA for the full-year 2008 in the range of
$25.4 million to $26.4 million, an increase of 41 percent to 47 percent as
compared to full-year 2007. comScore is forecasting non-GAAP EPS of $0.76 to
$0.80 per share.
For the first quarter of 2008, comScore is projecting GAAP net income of
$2.0 million to $2.3 million. The company is projecting GAAP EPS for the
first quarter 2008 of $0.06 to $0.08 per share on approximately 30.2 million
fully diluted shares.
comScore is also forecasting non-GAAP adjusted net income for the first
quarter of 2008 of approximately $4.4 million to $4.7 million. For the first
quarter of 2008, the company is forecasting adjusted EBITDA of $5.1 million to
$5.4 million, an increase of 86 percent to 97 percent compared to the first
quarter of 2007. comScore is forecasting non-GAAP EPS of $0.14 to $0.17 per
share.
The company's GAAP net income guidance for the first quarter and full year
2008 includes the effect of the income tax benefit of $8.1 million booked in
the fourth quarter 2007 due to the partial reversal of the valuation allowance
offsetting certain deferred tax assets, which consisted principally of net
operating loss carryforwards. The partial reversal of the valuation
allowance, and any future reversal, affects net income only; there was no
impact on operating or free cash flow. Operating or free cash flow is only
impacted when net operating losses are actually utilized against taxable
income to save cash taxes. As a result of the valuation allowance reversal,
comScore's forecasted GAAP net income for 2008 reflects a normalized effective
tax rate of approximately 38.6 percent.
A reconciliation of first quarter and full-year 2008 GAAP net income and
EPS to the non-GAAP adjusted EBITDA, non-GAAP adjusted net income and non-GAAP
EPS is set forth in the table accompanying this release.
Reconciliation from GAAP Net Income to Net Income excluding unusual
non-operating items, Adjusted Net Income and Adjusted EBITDA (Guidance)
Forecasted amounts for the first quarter and year ended December 31, 2008
are based on the mid-points of the range of the guidance provided herein.

Three Months Twelve Months
Ended Ended
March 31, December 31,
2008 2007 2008 2007
(Dollars in thousands)
(unaudited)(unaudited)(unaudited)

Net income $2,150 $1,540 $11,000 $19,316

Follow-on public offering
costs --- --- --- 392
Discrete valuation
allowance release --- --- --- (8,065)

Net income excluding
unusual non-operating
items $2,150 $1,540 $11,000 $11,643

Amortization of acquired
intangibles 7 293 16 966
Stock-based compensation 1,080 107 6,305 2,474
Revaluation of preferred
stock warrant
liabilities --- (11) --- 1,195
Incremental income tax
provision due to
valuation allowance
reversal 1,174 --- 6,053 ---

Non- GAAP adjusted net
income $4,411 $1,929 $23,374 $16,278

Cash tax provision 176 46 870 543
Depreciation 1,486 861 5,097 3,762
Interest (income)
expense, net (823) (97) (3,441) (2,627)

Adjusted EBITDA
$5,250 $2,739 $25,900 $17,956
Adjusted EBITDA
margin (%) 20% 15% 23% 21%

EPS $0.07 $0.00 $0.36 $0.88
Non-GAAP EPS $0.15 $0.00 $0.77 $0.71

* Forecasted, unaudited GAAP net income and adjusted amounts disclosed
above does not reflect any adjustments related to a reversal of the
company's deferred tax allowance.

Non-GAAP Financial Measures

comScore reports all financial information required in accordance with
generally accepted accounting principles (GAAP). comScore believes, however,
that evaluating its ongoing operating results will be enhanced if it also
discloses certain non-GAAP information, because it is useful to understand
comScore's performance, as it excludes non-cash and other special charges that
many investors believe may obscure comScore's on-going operating results.
For example, comScore believes that adjusted EBITDA is a useful measure
for investors to use to evaluate its operating performance. comScore defines
adjusted EBITDA as net income plus the (benefit) provision for income taxes,
depreciation, amortization of intangible assets resulting from acquisitions,
stock-based compensation, revaluation of preferred stock warrant liabilities;
less interest income (expense), net. The company believes that adjusted
EBITDA is an important indicator of the company's operational strength and the
performance of its business because it provides a link between profitability
and operating cash flow. Adjusted EBITDA is also widely used by investors and
analysts as a supplemental measure to evaluate the overall operating
performance of companies in comScore's industry. comScore's management also
uses adjusted EBITDA extensively as a measure of operating performance because
it does not include the impact of items not directly resulting from our core
operations. Moreover, the company's management uses the measure for planning
purposes, to allocate resources and to evaluate the effectiveness of the
company's business strategies and management's performance.
In addition, comScore uses non-GAAP adjusted net income, which excludes
the impact of the revaluation of preferred stock warrant liabilities,
stock-based compensation and the amortization of intangible assets resulting
from acquisitions, to evaluate profit performance including the impact of
interest income/expense and taxes. comScore's management also uses free cash
flow as a non-GAAP measure of the company's operating cash flow less cash
expenditures for capital spending as a key indicator of the company's
operating cash flow performance net of capital outlays.
Whenever comScore uses such non-GAAP financial measures, it provides a
reconciliation of non-GAAP financial measures to the most closely applicable
GAAP financial measure. The mid-points of the ranges for projected GAAP net
income and non-GAAP adjusted net income have been used in the reconciliation,
where applicable. Investors are encouraged to review the related GAAP
financial measures and the reconciliation of these non-GAAP financial measures
to their most directly comparable GAAP financial measure.
About comScore
comScore, Inc. (NASDAQ: SCOR) is a global leader in measuring the digital
world. This capability is based on a massive, global cross-section of more
than 2 million consumers who have given comScore permission to confidentially
capture their browsing and transaction behavior, including online and offline
purchasing. comScore panelists also participate in survey research that
captures and integrates their attitudes and intentions. Through its
proprietary technology, comScore measures what matters across a broad spectrum
of behavior and attitudes. comScore analysts apply this deep knowledge of
consumers and competitors to help clients design powerful marketing strategies
and tactics that deliver superior ROI. comScore services are used by more than
800 clients, including global leaders such as AOL, Microsoft, Yahoo!, BBC,
Carat, Deutsche Bank, France Telecom, Best Buy, The Newspaper Association of
America, Financial Times, ESPN, Fox Sports, Nestle, Starcom, Universal McCann,
the United States Postal Service, Verizon, ViaMichelin, Merck and Expedia. For
more information, please visit www.comscore.com.
Cautionary Statement
This press release contains forward-looking statements within the meaning
of Section 27A of the Securities Act of 1933 and Section 21E of the Securities
Exchange Act of 1934, including, without limitation, statements regarding
comScore's forecasts of revenue, adjusted EBITDA, net income, non-GAAP
adjusted net income, EPS and non-GAAP EPS and the related growth rates and
components thereof for the first quarter and the full year 2008; and
comScore's expectation to realize deferred tax assets and plans to continue to
evaluate such assets and related valuation allowances. These statements
involve risks and uncertainties that could cause our actual results to differ
materially, including, but not limited to: the early stage of the market for
digital marketing intelligence and the rate of development of such market;
comScore's ability to manage its growth; the rate of development of the
Internet advertising and eCommerce markets; comScore's ability to effectively
expand sales and marketing; comScore's reliance on subscription-based
revenues; comScore's ability to retain existing large customers and obtain new
large customers; continued growth of the Internet as a medium for commerce,
content, advertising and communications; inability to sell additional products
and attract new customers; dependence on growth of international operations;
product obsolescence with technological developments; volatility of quarterly
results and analyst expectations; comScore's history of losses and the risk of
future losses; comScore's limited operating history; and comScore's
utilization of net operating loss carryforwards.
For a detailed discussion of these and other risk factors, please refer to
comScore's Registration Statement on Form S-1 and quarterly reports on Form
10-Q, and other filings with the Securities and Exchange Commission (the
"SEC"), which are available on the SEC's Web site (http://www.sec.gov).
Stockholders of comScore are cautioned not to place undue reliance on our
forward-looking statements, which speak only as of the date such statements
are made. comScore does not undertake any obligation to publicly update any
forward-looking statements to reflect events, circumstances or new information
after the date of this press release, or to reflect the occurrence of
unanticipated events. Further, while comScore has included First Call and
analyst consensus estimates for comparison purposes in light of the
misperceptions in the market related to comScore's guidance, comScore
undertakes no obligation to present or comment upon First Call or research
analyst estimates at any point in the future.
SOURCE comScore, Inc.

John Green, Chief Financial Officer of comScore, Inc., +1-703-438-2325,
jgreen@comscore.com