There is an ignore function, so you don't have to read or respond to any poster who you don't want to. That said, merely being a fan of another club doesn't make someone a troll, or on a windup. We each have our fair share of people unable to engage in discussion, but equally we each have people able to.
Reading your 11 posts so far and the fact that you are a Palace fan on your rival's board there is no doubt you are a troll.