Some of the people I know already have seen my fanpop account - and I theirs so there would likely not be any surprise reactions if others see it, too.
I don't want to know. 0.0
Well, most of my family has seen me on Fanpop, but they've never really stopped to watch me, unless I want to show them something specific.
Anyway, they'd be weirded out at the very least over my...obsessions.