Yeah I have seen that also, there is only one user I know of that has a problem with me. He has been around a long time but deletes and makes a new account very often. I'm not the only one he has a problem with but he does hate me indeed. Not saying other users don't have a problem with me, only that if they do they never say anything to my face.
I try to get along with everybody at first, it takes a good reason for me not to. It does suck when somebody has a problem with me personally just because I'm on the leaderboard. They only affect you if you let them though, words have exactly as much power over you as you let them. If you don't care what anybody says about you then their words have no power over you. We all have our moments when our emotions get the better of us, I simply try not to let that happen very often it's all I can do.