1: Well, first of all thanks for the original links, they're helpful as a reference. But what I didn't like is that they can't be used as an evidence (well, besides the evidence that whois info is fake), thus you don't have to jump into conclusion that btc-e is a scam. There's a high risk if you use an exchange with the owners being anonymous, you're right. I guess those operating with a large amounts of money choose mtgox to a large degree because of that (apart from they're older, trade large volumes, e.t.c. e.t.c.). But unlike mtgox btc-e allows (I believe, at least I had no issues with that) their customers to stay anonymous too. So at the very end you had to choose what's your top priority and use service which suit you best.

2: I have explained that in the post above. If some other address had been used that would be unlikely. But what are chances of 2 various people to use Joe Doe as a username in domain registration info? I can bet you can find much more than 2 domains with first name Joe and second being Doe.