You can just add BTC or whatever to your custom payment options if you want to accept it as payment. Gresham's law suggests no one will use it to pay you though. The nonsensical/misinformed energy FUD etc is going to come in strong this year though, in an attempt to hijack the regulators and lock the plebs out so the bankers can front-run them. I doubt TradeMe would want (or be able) to stand up to that level of political heat.