Tried out Trade Hill today. It is legit and was faster than Mt. Gox when it came to transferring money in from Dwolla (although that could also be a matter of Dwolla being more on the ball today than they were a week ago). Prices are also slightly different than on Mt. Gox so if your are buying or selling check them both out to see the best price.
And since this forum has already been spammed with referral codes I might as well throw mine in there too.
Save 10% on all Trade Hill transaction fees for life by using referral code TH-R11567 when you sign up.
You can also use this link: http://www.tradehill.com/?r=TH-R11567
Thanks in advance