Its terribly slow. I made a deposit of 0.004 btc before 20 days approximately and the process still reached 43%, i will even get more btc if i surf faucets in all these days.
Each site is different and only as good as the operator himself. Speed-Doubler will be paying for as long as we have funds available.
Every owner of bitcoin doubler sites said the same thing but they never paid us any profit but also took our money and ran away. Why should we believe another bitcoin doubler and give our money to him so that he could enjoy his life and we keep regretting for it?
Lol! As expected. Everytime a new scammers creates a website, buy an account in bitcointalk.org and scams everyone and run away. It became a very easy job for scammers now a days to scam people with a good looking website and then run away.
You want a good way to earn some btc? dont deposit in these scam sites, you are most likely never reaching your ROI and if you are, you are among the few lucky ones...
I have just deposited 0.003btc and that isnt much for a try. but still i wish i will be one of the lucky ones
U need to change your signature for joining the campaign, but there is no guarantee if you will be accepted or not even aftr changing your signature. Even i dont know if i am enrolled or not but i have just posted and changed my signature.