Well, you could always send out and email saying that your identity was stolen and you just found out, so if anyone gets anything fishy or sees anything unbecoming...it was not you. Etc...etc...etc... Make it up as you go along.
Just change your email adres using your real name and give that to you family members and don't use it for private matters. And just because these RANTers have found out some small things about you, doesn't mean that your family will.
Who cares? It's just the internet. No one cares what happens on the internet. If people have that kind of time to google your email address...they deserve to know everything...People aren't THAT nosy...I think you're being unrealistic and dramatic.
I really think you're wrorrying t much. Who cares what these people on the net think, anyways? If they've nothing better to do than pay you out then that doesn't say much for either their maturity, or time-management skills. Honestly, don't worry about it. What have you posted that you're worried about your family finding out, anyways? Surely it can't be that bad! As for having the same username on different forums, if you go to www.writingforums.com and look up my username here , you'll find all the posts I've mad there, too. I really don't mind what people think of what I write. And yeah, the idea of changing your meaail address for your family etc is a good one, also, or you could change your username or put the people who are harassing you on ignore on the forums, too. Really, it's no big deal.