This is the reason why there's no one on testnet, because it can be reset.  Why not use namecoins, ixcoins, or i0coins?  You can buy a lot for a small amount of BTC and they won't disappear from a reset.
namecoin: https://exchange.bitparking.com/main
ixcoin: https://ixchange.bitparking.com/main
i0coin: https://i0exchange.bitparking.com/main

I don't see an exchange for testcoins, so maybe ixcoin isn't completely useless.