Late adopters FTW!
elvor sent me an invite as soon as he got in, but I didn't have any pressing reason to use G+ until people started tagging me in LRRndon albums. Fortunately my usual username is rarely taken on any website, so I still managed to get gplus.to/mikerpenny
Given most of my uni friends' apathy towards social networking in general, I suspect I'll find it hard to persuade anyone to bother with G+ (for now, anyway), and I already have tons of photo albums and message histories on FB, but I'm still happy enough to use G+ for the things I do find useful.
On the subject of games, I hope they add a button to hide games if you have no interest in them. Probably will once apps as a whole get rolled out.