[NextInstinct]

If your own, actual identity is synonymous with your public persona,
than there is no problem. You would simply have some privacy choices for various parts of your life online.

Ed is a great example. He teaches IM, and yet he tweets and bookmarks sites that I and others will find cool about guitar.
He is his brand, and he takes his public actions into account.
(He does not click on bookmarks with accounts we'd recognize when he's stealing ideas at DanRaine.com )
IF you have no intention of using your real name and full identity on line that way, simply have more than one account/ set of accounts.

I agree personal privacy is important.
I have a feeling this will be addressed for the purpose of the TDC
soon, in a way that will expand your understanding.