Negative comments regarding google+ :
There is nothing new other than circles, hangout, sparks, huddles, instant upload, etc.
In Circles, there is nothing new other than you can share stuff with different people and there is no privacy breach.
Nothing new about the UI except that it's cool.
Hangouts are just like google video except that everyone can video chat simultaneously and you can know when someone is hanging out and you watch youtube videos together.
Nothing new in instant upload other than that you can upload your photos instantly.
Nothing new about sparks other than that you can know about interesting stuff.
Nothing new about notification other than that you can see everything in the gmail window itself.