It's typical Google... trying to get into everything, but never really following through all that well with any single project. Don't get me wrong, I am a HUGE Google freak. But I recognize their products' limitations: If it doesn't catch on as quickly as they hoped, they kinda lose interest it seems.
I'm just sick of Facebook and Microsoft, so I WANT Google+ to take off. Facebook, because it seems like they are always messing with privacy settings; Microsoft, because of what happened to a little gaming company called RARE.