I suspect we see a lot more of this. Even sites like coinbase perhaps. I also see a lot of businesses restricting US businesses.
I hate to be beating a dead horse, but the quicker we can scale bitcoin, the harder it will be for any government to restrict the Bitcoin economy -- we'll be able to get coins without going through these registered exchanges and giving away all of our life history and identity. The bigger bitcoin economy there is I'd imagine the more incentive there would be to add privacy features as well -- companies like Apple will want to use bitcoin to pay suppliers without signaling to their competitors what they are doing.