To be precise, Bitstamp as a company is registered in United Kingdom, but indeed the operation base is in Slovenia, and owner + staff are from there. It also uses a Slovenian bank for accounting.

Yes, because the only thing Bitcoin is useful for is "profits". :/

The reason for the low volume on multiple exchanges is that there is little agreement on a price between buyers and sellers.
The markets almost run out of greater fools to buy at such high prices, but there aren't many sellers yet willing to sell at lower prices.
So most of the players are waiting for a clear trend. IMO it's going to be down, but this is bitcoin, anything can happen.