Subscribe to whatever interests you and then you can get emails when there are updates to that particular thread. If you get 2 or 3 emails where people start to argue, might as well unsubscribe and move on because it's going to degenerate in to a sissy fight in cyberspace.
If, on the other hand, you find the concept of two adults arguing, calling each other retarded and insulting their lineage, or (even more hilarious) posturing like they might throw down, then you are in for a treat with a capital "T", because in many cases it turns in to the Jerry Springer show of the cyber-trading world.