You can get in anywhere if you take a picture as rad as I have and send it in with your application. =)
On a number of occasions I've stopped myself from asking the following question but it just seems so appropriate right now that I have to go through with it.
Do you ever worry that a prospective grad school will stumble across your account on the forum, see your picture and think, "Yeah, let's not offer that guy a spot."
As an admissions director, I have certainly seen plenty of posts by applicants (that I recognize because they list our school and have very distinguishing data). And some of them definitely have interesting avatars. But under NO circumstances would anything said on this forum play any role whatsoever in whether or not they are admitted---I don't mention it to other committee members and am quite good at compartmentalizing. In fact, I don't go out of my way to connect posters with applicants -- it's occasionally obvious, but I do my best to ignore it. I suspect most admissions directors do the same.
Oh, and if Riley or happyquark were to apply to my institution, their avatars (if they mattered at all) would definitely be a plus