For years I have been paying sales tax (VAT) on purchases I make online through services such as Clickbank. It is inconvenient but it is much easier for Clickbank to work this way then to have to monitor the location of a seller and buyer.
The general rules in the US, as far as I can determine is that if you have a business presence in a state, you have to pay tax there. This applies if you own your own servers in the sate, or if you have employees.
Thus it might be beneficial for me, living in Europe to only
