Let me be pessimistic about this.
They did that just becuse they are feeling scared. Which means they know they had some fishy transactions.

Taking measures now , won't help them for the thing that already happend in the past.

But gox it's just an exchanger , it really doens't matter if it gets closed , robbed or burned.

What about all the BTC stranded there when its closed robbed or burned??

Actually assumption (because I don't know real laws about it), but I know a lot of cases where governments are OK with banks and companies who require verification of customers.

I always thought 'Know Your Customer' was the Bank's responsibility at the end of the day. I guess it depends who you piss off/pay off.

I agree, good news. It's better that they err on the side of caution. No legitimate users (not involved in criminal activity) are going to really complain. It's a fact of life, you can't potentially deal or facilitate in dealing with large amounts of money and be nameless.

Well, just all wait till the day MtGox get hacked (again) or seized by government. Suddenly, all those Bitcoin addresses used to fund/withdraw will be cleanly linked to your ID, photo, bank account, postal address. Nice.

  

if you think that way.. you should not use any exchange

Yes. But, actually, they do not need to sieze at all. They can authoritatively request information about selected users. And MtGox will have to comply and supply this information, silently.

I am not blaming this on MtGox .. just everyone be sure to realize this.

The are either very ignorant or they really think they are outside of the reach of the USG.  This means nothing, as it relates to USD, if you don't have a MSB license.  To my knowledge, they still don't.  Speculation:  Mt. Gox is going down.  This would be a devastating blow to the Bitcoin economy.  Just looking at the market depth, there is currently ~$18 million in BTC.  And looks like ~$16 million in fiat.  And that's just what's in limit orders.  No telling how much is just sitting in accounts.  Either way, if ~$34 million instantly vanished from the Bitcoin economy, it's going to leave a mark.  Hell, people can't even read a forum post without freaking out.  The panic selloff that would result at the remaining exchanges, would be tremendous.  

Cheap coins anyone?