Hello Jenny, I just saw I had violated one of the major TED spelling rules by inserting a space between TED and Talks in the Sidebar. Brrr, glad it's gone!--User:ElsDK 20:37, 2 August 2011 (UTC)
It looks like this wiki is now target of automated spamming systems. This "JanellaCarpenter1" spammed other wikis also (found this with Google). I suggest to make the creation of new user a little bit more secure by adding email verification and a CAPTCHA.