Mattisse returned as MathewTownsend. This user was teaming up with Jack Merridew's and Rlevse's socks to push for all sorts of weird changes at FAC, attack FAC regulars, etc.
I find this interesting - these were three users who attempted to use the FA process and content to get ahead. They were also corrupt users who relied on socks, plagiarized, and committed other problems. After they were eventually disposed of for abuse, they came back on new names to try and destroy the original system they tried to game.
The other site doesn't ever focus on such issues - they don't care about these fundamental problems and how the mentality of these users is quite prevalent.