I'm guessing this was from Jed?
Well, MTG was a US only exchange then I believe. The interface has been redesigned and the $1000 limit can be lifted by verification. No margin trading. No automatic ACH but Dwolla has essentially taken charge of that. Furthermore it hasn't even been a year.
I think they're doing pretty good.
Interesting, I'm a verified MtGox customer and my limit is still $1000. I just checked. Not that I'm going to withdraw that amount any time soon.