Report: Zynga Shrinks by 10%, Playfish Shrinks by 11%, Playdom Grows By 1%?

A recent report by Lou Kerner analyzing Facebook traffic across all the major social game publishers’ games shows that almost every social games company experienced losses in traffic for the month of May… all except Playdom. The catalyst for the loss of users was undoubtedly Facebook’s decisions to turn off two key viral Facebook features: notifications and requests. Are we about to see a shake up in the leadership of social gaming, and will Playdom begin to encroach on Zynga’s turf?

The report comes from SecondShares co-founder Lou Kerner, and lists the top losers for the month.