I let them pass me. I figure I'm doing the speed limit, if they want to go faster, they can go right ahead and do it. But I'm not getting out of the way.
BTW: Had a tailgater the other day. I'm doing 25-30 in a 25. This guy is riding my bumper in his SUV, and I can see him waving his arms and stuff. This guy was being really stupid, because this was in a place which is constantly patrolled by police. We get up to the light, and turn left. There is a bike (pedal powered) in front of me. We turn left through the intersection doing about 2 MPH. All I see is this SUV's grill in my mirror. It was sooo tempting to brake check him. Anywho, we make it through the turn, and as soon as we get to a passing zone, he wizzes past me (I'm doing 50 in a 45), and barrels up the road and starts tailgating another guy, after nearly hitting him. He was pulling out into traffic, and if Mr. SUV was doing the speed limit, he would have had plenty of time.
Anyway, not trying to make a point, just want to gripe a bit. :0)