i dont understand if someone wants to put up thier pictures its thier poraggative (does that make sense in this context?) if u feel that it is not tznius no one is forcing anyone to go onto the site.
onlysimchas does not rly care whether the pictures are tznius or shomer negieah it is a site where u can find out about diffrent simchas and some ppl like to see pictures. like i said if u dont like it dont go on.
and that weird guy in that story someone said (sorry cant remember who) it couldve been someone she knew and its a private joke between them (dan lekaf zchus) or mayb it really was a sicko. there are plenty of them out there.