Oh sure, definitely. My need for feeling connected to people, and for feeling understood, is quite strong, and I rarely experience it in real life - or on forums either, actually. Part of the fear's probably imagined (as in, I know there are people on here I connect well with, I just sometimes forget that), but part of it's real too (as in, I know there are people on here who don't like me and who I annoy the crap out of). And, self-imposed to some degree, maybe (as in, if I was more socially savvy and less cautious, I'd be less worried, my best self would shine through more often, I'd be confident, and thus wouldn't be fearful and wouldn't care, so the whole thing would be a non-issue).
So yeah, I definitely edit posts, re-edit, sometimes hold back, and quite often think no one relates to anything I write and I'm just a big weirdo who no one relates with because people *don't* quote me. Haha!! So how's that for you? Some cringe at being quoted, and here I am, thinking most of my posts fall into the black abyss of internet nothingness, and feel I'm a total alien half the time.