Well, me being one of the ones posting pics of me in my underwear, I can honestly say that YES, it does worry me to a certain extent. But I don't have any other personal info on this site so the fact that there may be some perv getting off to my fat pictures is just something that I am willing to deal with, especially if I am motivating other people, which is what this site is for. But I have decided to take pictures in just a tight spaghetti-strap shirt and tight pj pants from now on. I just don't think normal clothes justify the human figure enough as being in your underwear may show. But that's just me