I wonder why bank transfers, which also should be possible internationally, are but rarely used.
Beats me. It costs between €10 to €40 depending on the bank to get the money from an international cheque (which is kind of a pleonasm since cheques don't exist anymore in Belgium ).
If you make money with writing, you'll probably need an extended tax form for the Belgian taxes. In paper, that has to be requested beforehand, but I don't know whether it is any faster in tax-on-web.
The good thing is I have until June next year to figure it out (assuming I actually sell any e-book).