Piczo, a San Francisco-based social networking company focused on teenagers, has raised $11 million in second-round funding. U.S. Venture Partners and Mangrove Capital Partners co-led the deal, and were joined by return backers Sierra Ventures and Catamount Ventures.

Genius.com, a San Mateo, Calif.-based provider of on-demand 1-to-1 marketing solutions for sales and marketing professionals, has raised $10 million in second-round funding. Mohr Davidow Ventures led the deal, and was joined by return backers Emergence Capital Partners and Walden International.

Meebo Inc., a Mountain View, Calif.-based provider of Web-based instant messaging, has raised $9 million in Series B funding. Draper Fisher Jurvetson led the deal, and was joined by return backers Sequoia Capital.

Yeelion Inc., a Beijing , China-based company focused on personalized digital information, has raised $5.5 million in Series B funding, according to a regulatory filing. Shareholders include Ignition Partners, Qi Ming Venture Partners, QuiJia International and MingTech International.

Funambol Inc., a Redwood City, Calif.-based developer of open-source mobile application servers, has secured $5.35 million of a $10 million Series B round, according to a regulatory filing. Return backers include HIG Ventures and Walden Ventues.

ClickandBuy, a European digital payments platform and e-payments system, has raised an undisclosed amount of funding from Intel Capital.

TagWorld, a Santa Monica, Calif.-based social networking company, has raised an undisclosed amount of funding from Viacom unit MTV Networks, according to paidcontent.org. TagWorld previously had raised capital from Draper Fisher Jurvetson.