Gladicoin uses a process of arbitrage trading your bitcoin and promises an ROI of 200%! There are different amounts you are allowed to double, ranging from 0.05 btc to 4 btc. Regardless of how much bitcoin you invest you will always receive a ROI of 200%. I have lots of trust in this company. If you do not feel comfortable investing a large sum of bitcoin, I would suggest investing 100$ or less and double that. I would never try to double more than i can afford to lose though! My was to double my 100$ investment then 200$, never adding any more then what i have earned through the process . If you would like to try out this awesome way to double your bitcoin just sign up with this Link
