I've donated my opinion to the psychological study in the interests in science. ;)
"Hot" is really a measure of only physical attraction. Someone can be hot, and also a complete jerk. It's kind of hard to define what makes physical attraction, since everyone's preferenees are diffrerent, but if someone says you're hot, take it as a complement. Don't just stare at them like they're weird.
I've seen a load of these threads on message boards(but least of all would I except one from YOU), and they're always skewed toward being "hotter" than they really are because the votes are coming from friends. If you want a COMPLETELY, BRUTALLY HONEST opinion about how hot the average person thinks you are, put up your picture at
HotOrNot.com. But I'm not sure if that's what you're really looking for here.
Also, you might want to at least put up your picture HERE so that the many people who haven't seen you can actually vote here.