This is the reason I don't use Google+
I have active pages with more than a million users in facebook, opened an account for Google+ when it came out, but I freaked out when I read about them banning users for not using their real names, even losing all other associated google accounts (AdSense, especially). No way I am willing to use Google+ along with AdSense if I sense that in any way something as trivial as using whatever fake name I want can create problems with my account.
And hence, another website, with millions of traffic and social followers, does not even promote G+. Just a grain of sand, but I'm sure I'm not the only one.
OK, So now, they no longer require this "real name", but even so, your other accounts are not independent. Being banned for any reason (I really never should be, never had any problems in facebook for example, but you never know) would result in ban from gmail and AdSense. If not so, that's the impression I have, and reason I still keep away (even if they probably changed policies). I need to be really certain I will never have such things in danger before I even touch or activate G+ again.