Tried plentyoffish. Everyone my age has kids or is a drunk on there. Eek.
And, to keep it fair, everyone on OkCupid is "poly" and looking for a friend on the side, or has herpes, or both. (At least one of the OkCupid developers has been known to comment here on HN...and if he's around, I extend apologies for the vicious and unfounded accusations.)
I've already noticed something along those lines. Jeeeesus.