TBQH, if somone wants to find you badly enough, they can and will

Other than basic spam protection measures, I've never seen the point in trying to hide myself in any decent way.
As an admin, I've seen it all upto and including the odd abusive text message/ phonecall, and they will find you eventually, it's just a matter of time.
All you should really do is make sure that your passwords and memorable question answers are based on something not on your public profiles, which should deter *most* hackers, but again, if someone's determined enough, they will get in.
Hope I haven't scared you ;p
Basically though, use common sense so that your passwords and stuff aren't guessable, and you should be fine.
-Leezer-