23% bump in your Zynga at 12.25? Be happy. Hell, if you still believe in it, buy some now and ride the momentum, but be ready to sell quick (assuming you're trying to momentum buy). I've thought about Zynga because they've diversified a bit. I can play Poker via Zynga on FB, or Yahoo. I'm sure there's other ways, but my point is they're not 100% locked into a single source. They've also been pretty effective at establishing themselves within gaming and are aggressive in giving people a reason to come back. They're borderline insane with their ads, etc, but it's bearable.
Google just rubs me wrong for reasons I know are just my own personal hang-ups. I don't like their Draconian methods of dealing with issues. For example, if they even
suspected your Google+ account was an alias, they'd lock you down with no ability to get your documents "released." I've had documents I've stored in Yahoo for 11 years. I trust it and rely on it. Google has shown through direct efforts I can't trust them.
I have a feeling FB's timeline will reduce greatly my already short time spent on their site. Between Slashdot.org and Camaro5.com my free time is pretty much used up (ok, and AAFES.com to send electronics over to me in Afghanistan

)