SFF 18+ is a message board/online forum "for grown-ups by grown-ups" whose members post dirty pics of themselves and/or their spouses for other folks to slobber over—and then get off on other members posting such ego-boosting comments like "Your wife is hot!, thxs!" Which isn't to say that this in itself isn't worth the price of admission (which is free), but what we really like here are collections of member-culled photos of things like flexible girls (and guys), vintage pornography, big strong women, and—our favorite—girls with guns. Registration is required to become a member, but the two minutes or so it takes to choose a password and reply to their verification email is totally worth it.

· SFF 18+ (zulu.messageboard.nl)
· Thumbnail star: Katie Kristina Fey

Previously: Hand(s) Down Pants, My Beautiful Wife, Night Amator, Gold62's Amateurs, Submission Sisters, Le Blog Piececitos, The Flickr Boobs Pool