A few other posters noted that Obama's gesture is just regular ASL, to which the topic starter replied "unless you personally happen to know why someone used it in a particular instance - it could have meant any of it's different meanings." No Occam's Razor for this fellow - if it might be an evil conspiracy, then it must be an evil conspiracy.
I'll tell you what though, the whole "conspiracy of devil worshippers" bit is getting tired. I propose that if we must have a conspiracy to go with this picture, then it should at least be a little more original. Let's pretend that perhaps the president elect does have a secret...an alternate identity perhaps, one that no one else knows about. Perhaps someone who's occassionally on the wrong side of law, someone who tries to do thing his way. It would would have to be someone with an athletic build...someone who was born in the early 1960s...someone with a propensity for hand gestures. Wait a minute...
Yeah, that's right. Barack Obama is clearly Spider-Man. You read it here first. I mean sure, there are other interpretations of that gesture, but since we don't know the context in which that photo of Obama was taken we may as well infer that it he was getting ready to shoot webs at the Green Goblin. Who's to say?President Spider-Man! Bin Laden doesn't stand a freakin' chance.
No, wait, that's ridiculous. Nevermind.