I think Google+ may just turn out to be the best social network of them all. I also think though that Google+ has a lot of headaches currently and unless you’re ready to deal with them you should stay off Google+ for now.
Here’s my short list of Google+ problems. If you can’t live with any of these: Don’t try to get on Google+ yet. Most of these will be fixed. Keep in mind that some of the potential policy problems may not be changing anytime soon… if ever.