Tracking Who's Saying What About Whom

"Every day, I'm an absolute sponge," said Curran, 25.

Curran said she is careful to acknowledge her connection to clients when it's required. All online marketers have to walk a fine line when they work the blogosphere. Federal Trade Commission rules require them to identify their roles when they're making a point on behalf of a client, but if they're gossiping about the latest episode of "Desperate Housewives" they can legally be as anonymous as anyone else.

The New Media Strategies employees are young, self-identified tech geeks whose goal is to know the Internet inside and out -- an increasingly daunting task as hundreds of new blogs and Web sites crop up every day. They try to stay a few strides ahead of online developments -- or at least only a step or two behind.

"The Internet used to be our oyster," Curran said of the days just a few years ago when there were only chat rooms and message boards to monitor. "It still is, but we have to reassess the things we pay the most attention to."

New Media Strategies' entertainment practice was the first to take off; Hollywood has long been willing to spend money to influence the online world. Over the past few years, Coca-Cola, Burger King, AT&T, Dodge and Ford joined the client roster. Most recently, public affairs has become the fastest-growing area for the company.

"Before, we could barely get a politician to spend money on a Web site, let alone a massive Web campaign," Snyder said from his Arlington office. "The world across the river is waking up to this."

So are buyers and investors. Media companies are starting to show strong interest in adding interactive firms to their portfolios, said Seth R. Alpert, managing director of AdMedia Partners, a New York investment bank that facilitates deals between advertising and marketing companies. AdMedia represented New Media Strategies in its recent acquisition.

"Serving advertisers is now seen as being more broad than putting ink on paper or building Web sites," Alpert said.

British marketing giant WPP Group, which includes established advertising firms Ogilvy & Mather and Young & Rubicam, has acquired several interactive-media firms. Nielsen Media Research combined three online-research companies to create Nielsen BuzzMetrics, which analyzes online markets.

In the Washington area, private investors recently put money into another start-up -- Clarabridge, a Reston company whose software crawls Web sites, recording what people say about specific products or brands and tabulating the occurrence of positive or negative words to help clients assess their cyberspace images. For example, it tracks recommendations and criticisms about certain airlines on travel sites.

The company calls the process "online intelligence." It is currently working for pharmaceutical companies to get a sense of how consumers feel about the drugs the clients make.

"This can shape how they spend that million dollars to launch a product," said Sid Banerjee, co-founder and chief executive of Clarabridge. "There are enough mainstream consumers making decisions on the Internet that they represent a meaningful sample of the market."

Last week, the company took in $7.2 million in venture capital funding from Intersouth Partners, based in Durham, N.C., and Reston, bringing its total financing to $10 million since it started in 2005.

Cymfony, a Boston interactive-media firm and a competitor of New Media Strategies and Clarabridge, has received $24 million in venture capital cash in the past seven years.

Cymfony got its start doing research for intelligence agencies but decided to use its text-mining software to monitor the consumer-generated Web. Its business has doubled as advertisers take to the Internet, said chief executive Andrew Bernstein.

"There's too much media online and no one knows where to turn," he said. "So they turn to us."