I know I am late responding (and personally, I like reviving old threads if they still have relevance), but maybe this can still benefit others.
Flickr is a good alternative. You can give your pics a rating of Safe, Moderate, or Restricted (which will mean they are not intended for kids).
I have seen it all on flickr.. from revealing spandex gear, to guys out of spandex, to pics of people having full on sex.
I post my swimwear pics there.