I see your point, and I don't wanna seem all pissy, but nobody else has really pointed that out before. I'm not going to say it's just you, but I've posted my friends' pictures before, as have many, and nobody has really had any kind of problem with it. People upload their dad's, mom's, friend's, brother's, sister's, aunt's, uncle's, pictures all the time. Also, I was actually there with him, he just had a better camera (my dad's camera), and if I were using it instead, I probably would have gotten the same or similar shots.

(Now, if you only posted your own pictures half the time, that would be pretty dumb. But if it's just once in a while, I think it's fine.)