Somebody has successfully sent coins to the mixer, and redeemed the new mixed coins. If they post the two transaction IDs (sending and receiving) and the value of RandomPrime to the reddit thread, they can have a reward of 0.01BTC.

edit: Really, all they need to post is the RandomPrime - I already know the two transaction IDs (only because there were only two transactions mixed and I made one of them. In the future when many people use the mixer this would not be possible).

The mixer has received 1.0, 0.5, 0.2, 0.1 and 0.05 BTC transactions (always testnet) - is it all the same person? The 0.05BTC transaction is now redeemed.