I'm really curious as to why there's a wall in many currencies.
I do find it odd that there are bid walls on MtGox USD, EUR, and CAD. After being up for 5 hours, the wall is looking less and less fake.
And in stark contrast, Bitstamp still has a sell wall. It's only half of the 8k sell wall it was last week, but there are almost as many coins are for sale below $132 on Bitstamp (4777) as on MtGox (4869).