Testing

I go annually as well but if I am traveling a lot I will get tested more often. Get tested when you get you pap smears it's a lot quicker : )

I think it depends on how often you switch partners. If you are with the same partner for an extended period of time, I think annually is fine. If you are playing the field a bit, then I would recommend every 6 months, and that is just to be on the safe side.