Appssavvy, a start-up that connects advertisers looking for "social media" campaigns with developers and firms that will build widgets for them or get their ads on existing apps, announced on Tuesday that it has raised $3.1 million in Series B venture funding.

An analyst with market research firm Gartner, has projected that over 75 percent of Fortune 1000 companies with Web sites will have undertaken some kind of online social-networking initiative for marketing or customer relations purposes.

For years, Amy Jo Kim has been a well-known and respected member of the video game design community, as well as the author of perhaps the best book ever written on building online community.

In an announcement sure to raise eyebrows among the companies gathered at the Web 2.0 Expo here, IBM said Wednesday it is opening the IBM Center for Social Software.

A would-be social network called Wallop has shut its doors, according to a message on the home page.

The online magazine Slate is launching a spinoff site on financial news Monday, bringing tools for business executives and investors alongside its traditional emphasis on analytical articles.

The Wall Street Journal is borrowing elements from popular Internet hangouts like Facebook as it seeks to boost usage.

Many of us have accounts on several social networking and micro-blogging services, but we update them individually when we get around to it.

HBOlab, an experimental offshoot of the cable powerhouse focused on online programming, is launching a Web video series featuring a cast of the Internet's most popular entertainers.

Location-based social network Whrrl has forged a rather odd partnership with content provider HBO to place various fictional characters from the show Entourage as real users on its network.