[stands2reason]

I was thinking along the lines of psychological warfare.

I tell the men who post her picture that they are secretly attracted to her, that's why they post her pic so much. (and it does seem to be a guy thing -creepy, no?)

[Harmless Teddy Bear]

I think it is related to the "courtesy sniff" concept where if a guy finds something stinky he must get all of his friends to smell it too.