Lithium Technologies, an Emeryville, CA-based provider of white-label social networking tools, has raised $12 million in its second round funding, led by Benchmark Capital. Benchmark joins Emergence Capital and Shasta Ventures, which co-led a $9 million first round in April 2007.

SEE ALSO: On Demand Social Net Manager Lithium Technologies Closes $9 Million First Round

The company, which has been around for almost seven years now, has been working with clients such as AT&T (NYSE: T), Comcast (NSDQ: CMCSA), Dell, Sprint (NYSE: S) and others to power their online community. The technology was originally created as part of online gaming portal Gamers.com. CEO Lyle Fong and his brother Dennis co-founded Gamers.com and its parent, GX Media, which raised $15 million from investors including CMGI in 1999.