After the big SSO update yesterday on TD.W, It seems ti be the only site I can log into physically, and GA.W uses my username from there now. My karma transferred from there to here...
I personally, do not like the thought of having my accounts linked together. I expected to remain an anon in both sites, this appears to be a break of anonymity.
Just logout of TDW and login here with a new account. Yes it will log you in there with your new account but you don't have to post under it.
If you are just having a quick browse there after being here with new account no problem so long as you remember to log out and re-login with your TDW if you want to post something there under your normal account.
Haha that probably sounds more confusing than I wanted it to.