Playfish, the social network gaming company founded by wireless industry veteran Kristian Segerstrale, announced a series B round worth a very respectable $17m from Accel Partners and Index Ventures. Playfish boasts 10m monthly users and claims that 4 of its 5 games are in Facebook’s top 10. The company also said it recently joined Google’s in-game advertising solution and presumably banks on capitalizing on this success. No word on financials but they surely are getting their slice of it (just how thick that slice is, I’d like to know). No word either on any mobile activities (which might be coming given Kristian’s background as founder of Macromedia).