Can you give them some time? They just put this out recently, so let them work out some bugs before adding more content. Besides, if they would have slurped up all the data from all the other social sites, there would have been an uproar on privacy issues. Even when they included their own social network there was a big stink about privacy.
surely they have a right to promote there own services?
At no point was there search wrong, twitter was on the first pages as it should be. This was on the right hand bar where Google have all the right to place what ever they want and if they want to use it to promote G+ then that is fine.
As long as what i see when i search the web is correct then i don't mind Google advertising its own service.