Until this very day I never understood why Linden Labs didn't implement a small fee for multiple avi's . Let's say the first 5 for 10 Dollar, next 5 for 20 dollar etc. I am pretty sure that this easy measure would take out most of the trolls and griefers. Aside from all technical stuff above it's the reason why so much trolling is going on. LL makes it too easy and , on top of that, cost free to enroll with too many accounts.