Maybe I'm weird. . . . Ok scratch that, my own signature reveals that I know I am weird, but I try to present myself as the same person I am in real life, except that on the Internet I am more reserved and cautious. I am more careful in what I say, and I try not to speak unless I can improve upon my own silence. But many people seem to be the opposite way.
As far as someone being a farce, I think ultravox got it right: who really loses in that situation? If I am so concerned with being fooled that I cannot treat everyone I "meet" with an initial and appropriate level of transparency and trust, then I am the big loser in the end. If they abuse that trust because of some latent, narcissistic issues of their own, then I consider the trust I gave them a small price to pay to prop up that one's own shatterred self-concept and maintain my own freedom and ability to trust and be real. For example, I was saddened by dennilfloss' duplicity, but I know that he was, and is, hurt far more by his own deception than I was.
I'd imagine most people here really don't care who someone really is versus who they portray themselves to be. The internet will always be able to deceive you, get used to it. If windogg turned out to be the girl in his pictures and not the guy who he has portrayed himself to be, how would that matter? Even if the handle you see is just a character, all that's important is that charcter, at least to me thats how it works.
Unless you're a pedophile trying to lure kiddies to your lair, I don't think it really matters if you portray yourself as a man/woman/gorilla/fish/etc...
But I -do- think its funny to see someone try to pretend to be something they're not. Like the posts from new profiles asking for help to hack/crack their own software that they _lost_ the license to. Or posting a Hot Deal link to a page created by the poster, usually indicated by using their own name for the profile name. Heeheehee.
Personally, I think it's too much effort to try to be something that you're not. But if you've got the brainpower to support keeping multiple profiles and personalities active on the forums, more power to you. But don't expect me to invite you over to meet the family.
Although I realize that I won't meet most people that post on boards ever in my life, there's something to be said about being able to openly share your thougths and ideas in a forum like this and since you're not just dealing with people in your area, there is a chance for communication between people of all backgrounds and whatnot. I know that there are posers out there, but I've come to think that most people will put exactly what they think on a message board which is fun and good to hear, whereas in real people can say what they think, or say what they think you want to hear, or anything like that because they're out in the open.