I can't see it improving anyone's sex life. Even with 24/7 moderation to weed out the joke/troll posts (which I can envisage a site like this being a real honey-pot for), everyone's tastes and desires are different. So the best way to improve your sex life will still be the old fashioned methods; to read their body signals (it shouldn't take a genius to tell if you're turning on your partner) and even just to talk to them (assuming you're in a relationship).

Best of luck to the OP though.