Golden Rule:

IGNORE THEM ... In general, NEVER ENGAGE A BASHER. Make them read all the posts and think up ways to enter the discussion. NEVER ENGAGE A BASHER; if you do so then YOU BECOME THE BASHER,S AID! If you feel compelled to challenge a Basher do so without mentioning his/her true alias in your response. This will make it hard for the Basher to use your post as a revenue stream.