The only thing I don't like about green addresses is that as a recipient if I refuse to take the money and send it back, it is not charged back to the person that sent it to me.

I had a discussion about donations to a political party as it might turn out to be very funny with the laws in place in Germany:
Parties are not allowed to take anonymous donations above 500€.
Immediately returning the money counts as not taking it.
If they can't refuse to take them (as they went to them cash in an envelope/in a mail with a bitcoin wallet attached/sent from a green address) they have to give the money to the president of the German Bundestag.
I would love to see what this guy dues with bitcoins