Wildfire Interactive, a social marketing services company that has been active on Facebook since 2008, has just raised a $4.04 million first round of funding led by private equity firm Summit Partners, with participation from well-known angel investors Jeff Clavier, Aydin Senkut and Gary Vaynerchuk participating.

The company has been steadily building a variety of social media products on Facebook, in email newsletters and on other sites like Twitter. These include sweepstakes, user-generated contests, quizzes, coupons and incentive-based surveys, typically implemented as tabs Pages. The company works with a wide range of big clients, including apps for some of Facebook’s own Pages. It has also been focusing on standardized products that small to medium-sized businesses can use, like this new sweepstakes service it is providing for small businesses in conjunction with Publisher’s Clearing House. Wildfire has also been boosted through being one of the winners of Facebook’s fbFund, which gave it early financing and visibility.

The company says it has been profitable since its early days, and has run thousand of campaigns, including for brands like AT&T, Edelman Digital, Electronic Arts, LiveNation, Pepsi, Sony, Subway, Unilever, Victoria’s Secret, Yahoo!