I try not chase them. I do like how I'm slowly moving up the leader boards so must be be improving. There is one I'm chasing though. The hill going into bosworth battlefield centre. Currently second and 2seconds behind the kom
It didn't and doesn't bother me, it's nice when I do get a p.b. had a lot of late, but simple because I have a lot around here, and I am doing some short more intense rides, because I just wasn't improving plodding out 30 mile rides at 12-14mph, I could do that almost everyday.
The other thing about them is you know you are improving, what I do like is if I get a p.b thats close to home after I have done some distance then I know there's an improvement.