Facebook Game Developer Serious Business Raises $4M Series A

Serious Business, Inc., makers of popular Facebook social game Friends For Sale, has raised a $4 million Series A venture round from Lightspeed Venture Partners at an undisclosed “healthy double-digit” valuation. The investment will be announced by Lightspeed’s Jeremy Liew, who is becoming a board member, and Siqi Chen, co-founder of Serious Business, at this morning’s Games 2.0 panel at Web 2.0 Expo.