Obnoxious profile pictures are just that, obnoxious. That is why you should avoid any and all really annoying pictures–it could result in a ruined online reputation.

If you want people to like you, or at least not end up hating everything about you within 60 seconds of opening your picture gallery, you should avoid uploading pictures that contain: cars, boobs, rude gestures, angry facial expressions, alcoholic beverages, hugs, Photoshopped elements – seriously, no one likes those lens flares – and cartoon characters. Subjects more likely to invoke a positive response are: sensible-looking friends, wedding photos, pictures of children (hopefully yours) and shots taken on a beach, though that might clash with the “no boobs” rule. Smiling is good too.

The “no boobs” rule is one you see violated on a constant basis.