I'm led to believe that Moderators of this site have the power to suspend a user's account but don't have the power to ban that user.
Could Mods not be given the power to close a thread? This would stop umpteen replies (of which I'm guilty myself) being posted on abusive trolls' threads and would stop them getting off on the attention they get.
That seems like a very good idea. These multiple posts in particular mess up the site for the rest of us.
Reporting is tedious if you don't know if there is anyone watching the other end. Having said that, there was a post on Friday that was particularly vile, and that had gone in a flash.