[alex-yo]

Hi, thanks for the reply.

I'm outside USA, and the tax thing is simple: I send you an invoice, you send me money. Nothing more, nothing less. No insurance problems, or different law issues.

As for the conferences, I attended some, I was even presenting on some. I learned nothing, as most of the stuff I had already known. Currently I learn from books. Usually from algorithms, and math ones. This is the kind of stuff you won't find on conferences. Btw, many conference videos are available on youtube, so going there to learn is IMHO not the main reason for a conference.