bitcoin-farm.comAccumulation of funds on the balance goes without your participation.
Available accumulation speed upgrades:
+10 satoshi/min - for tweet
+1 satoshi/min for 1000 satoshi
+5 satoshi/min for referral
+100 satoshi/min for YouTube video
Minimum withdrawal amount: 0.1 BTC (not tested)
Calculation: in order to get a minimum in 30 days, the speed should be 10.000.000/(30*60*24) = 232 satoshi/min