Tangentially related, my experience with the YouTube/Google plus social network merge has been pretty awful. I opted-out initially to integrate with Google plus, I couldn't have cared less so I just stuck with my original username/account. It seems even though I opted out, Google created a Google plus YouTube profile for me anyway and now chooses to nag me about it every time I go there. I have to pick every time I go to YouTube which 'profile' I want to use (defaulted to Google plus social network) even though I never wanted this new profile, and I have a big banner telling me I am using YouTube as profile 'x' permanently stuck at the top just to rub it in.
This annoyed me enough that a couple of weeks ago I gave up and tried to integrate it into their social network so I could just have 1 profile. Now it appears I no longer have the option to merge my original profile into Google plus, it just isn't there on the account settings. Because I made one decision to opt-out of their social network it seems I will permanently have 2 profiles from this time forward, the Google plus one has none of my history, subscriptions, likes etc it is a completely useless account.