stay active in bitdouble chat and get cool bonus from moderators there.
and dont forget about our VIP bonus system :

VIP System
VIP 1VIP Level 1 (Bronze) >0.1 BTC  you earn .001btc
VIP 2VIP Level 2 (Bronze) >0.5 BTC               .005btc
VIP 3VIP Level 3 (Bronze) >1.5 BTC               .015btc
VIP 4VIP Level 4 (Bronze) >5 BTC                  .05btc
VIP 5VIP Level 5 (Silver) >15 BTC                  .150btc
VIP 6VIP Level 6 (Silver) >50 BTC                  .5btc
VIP 7VIP Level 7 (gold) >150 BTC                  1.5btc
VIP 8VIP Level 8 (Gold) >500 BTC                  5btc
VIP 9VIP Level 9 (Diamond) >1500 BTC           15btc
VIP 10VIP Level 10 (Diamond) >5000 BTC        50btc