Personally, I'd be inclined to go the other way and change my name to John Smith. I'd rather not be easily Googleable by my real name. That's what handles and business names are for.
My name is unique to begin with; I've taken further steps to own it on the internet. I made the mistake of tying it to this username, once, which has led (for better or worse) to a greater discretion under this username.
Yes, once you start to "promote" yourself your personality becomes "public" and different privacy conditions start to apply to you. Don't be surprised of the effects.
