"You can switch back and forth between anonymous numbers, your username and userx
but if you change it, it will change all the posts you've ever made i think."
WOW! What a revelation! Yes, you are exactly right. When Troll #186736 changed his ID to Userx, it actually erased ALL of the posts ever made by #186736 from his new ID! Also, his new ID Userx does not record a message history, so he can brazenly continue posting his Sleeze with no record.
I'm going to focus on this for a while. I have PLENTY of Trolls to examine over the past 2 months. If I can get all the facts put together, maybe we can get a permanent fix for these Troll Loopholes from the Webmaster.