I have been using Freebitco for almost 7 years. That's a long journey, and I have made more than 20k faucet claim until now. But I'm not in profit at Freebitco. I'm down like 0.135 BTC, which isn't big actually. Luck is the main factor to make profit, but the 5% house edge has indeed made the multiply BTC game dangerous.
"I have been using Freebitco for almost 7 years"
- That is a long period. How did you manage in the beginning, say, first 2 years?
"Luck is the main factor"
- Absolutely. Nevertheless, you will lose more if you aren't aware of the other factors.
"the 5% house edge has indeed made the multiply BTC game dangerous."
- The law of the great numbers allows you to anticipate that with a 5 % house edge, it is guaranteed that you will lose any enough long sequence of rolls. [Note: sequence, not streak. Enough long at your discretion.]