With all the discussions about privacy in the last couple years I am a little surprised at how many common sense approaches people seem to overlook or at least not implement. i.e. always have an email address for business, one personal/social (maybe these are separate), etc. and use them accordingly. The rest is up to you as far as how much access you allow to your profile, how willing you are to give up your real name to the service, and similar problems. Seems to me people have much more to fear from big data than someone who already has your email address being able to see your name and public profile pic.
Thought everyone else did too. - I use it when sifting through job applications.
I don't see how this is a privacy issue. People can just google a name and get straight to someones public profile as well.