Do you keep your online and offline lives seperate? Do you consider forums etc your "private" space away from spouses and friends etc?

At the moment mine is blurred at the edges, my twitter is very much public and helps for self promotion etc. I'm currently a normal private citizen, but my new job will actually make me a public figure (though a very small one) and that scares me a little.

Currently it's easy to link my "private" online persona here to my public one, but it's more of an effort to do it the other way around.

Question is, should I be more worried and hold back here or get a completely new username and not link them at all? Or should I just be myself everywhere since I never do anything that could seriously damage my reputation anywhere anyway?

Also, part of me wants to keep certain forums as "mine" and not be invaded by my personal life, but I don't mind forum life invading my personal life.

Then again I might be so small that no one would follow me to other places online anyway... I'm just trying to decide how to mix things but finding it tricky!