It should be that. Cash is now dirty, full of virus that we can't predict which will infection to us. Online transaction is optimal method currently.

It based on view access, trusted rank and traffic rank of Google. The higher value your site gains, the higher position it hold on Google Search results.

We couldn't know. No one couldn't know exactly what would happen. Bitcoin might be devaluated, the other crap coins might be soaring...

What did you mean? I'll advise every new one with your idea?