Betaworks is a small but well-connected New York investor/incubator firm that’s making a name for itself. It has put money into a number of well-hyped (and incidentally, also New York-based) startups including dating service turned social gaming site Iminlikewithyou, local news site Outside.in, joke e-greeting card company Someecards and music recommendation service Songkick.

Most prominently, it backed Summize, the search engine for Twitter — that Twitter bought this summer for $15 million. Betaworks, which uses the buzzword-laden phrase “business accelerator platform” to describe itself, has just raised another $10 million to $15 million from prominent angel investors, Silicon Alley Insider reports.

The firm will use the new funding to increase the size of its investments from $75,000 to $150,000, according to the report.

If you want to get an idea of how connected Betaworks is, here’s the list of its investors in this round, via SAI:

Jean-Marie Messier, last seen trying to transform Vivendi from a water utility into a media company during the last bubble.

Bob Pittman’s Pilot Group*

Henry “Hank” Vigil, Steve Ballmer’s chief dealmaker at Microsoft

Former Dow Jones publisher Gordon Crovitz*

Taavet Hinrikus, an early and current Skype employee

Paul Cappuccio, general counsel at Time Warner

* Both Pilot and Gordon are investors in SAI parent Silicon Alley Media