You can check here the latest results of the finished competitions. Everyone participates automatically but you need to claim your price wihtin a week a competition ended.
Screenshot 31th October 10:00 - claim until 7th November
Claim here your price (skip first 5seconds the ad - thanks)
These bitcoinadresses have claimed and received their price on time:
1CGsesGM6fNSzLKoP51SpjDNiKmtzNF68F got 2500 satoshi
174Rn5oRpt1b9XNhrvfgtMhxCmQBcHzffh got 1000 satoshi
1BmWp3uzKBhuUsmMut2796ekjbTjPdwHw6 got 75 satoshi
1tirDhu7bFfkSCxWa9VD7nbLhgyVJ2TXv got 500 satoshi