This is the main reason I feel people think its a scam. In a way bitconnect is trying to get peoples bitcoin promising them a percentage per day. Even if it may be 0% for that day. Right now it might not seem feasable as bitcoin, ether and all these other cryptos are skyrocketing but when they calm down? Compared to my bank... where my money was kicking it and gaining about .20 cents a month is now earning me $10, $20 bucks a day. Then it lets me cash out my profits at any point. If you have bitcoin to invest in what is just $100 in "profit" to test it out? Compound interest is pretty amazing. The biggest red flag I feel they have is that you dont see them on any other exchange like you mentioned.