Quickseller, also we can touch savings like Magnr.
I am pretty new, but i saw site where about 9 different Exhanges like Toro or BitMex. As i understand i can trade BTC there with higher shoulder. ( is that call fufures? ) Where all that guy taking BTC ti trade without lending?
Also Bitmarket Poland site. Do you know some thing about it? )
crazyivan, thank you. Security advises ever is good. About anti-key logger i even did not heard. Will search some info )
I am unsure of the legitimacy of Magnr, and cannot reasonably advise if it is some kind of scam or not. It looks like they are offering 1.28% APY on BTC deposits (per year), which is not much more than what you would expect to earn in a single month on bitfinex. For this reason alone, I would advise against depositing BTC there as you will almost certainly earn much less than alternatives, and will have less access to your funds.
I had never previously heard of Toro however I would advise against doing so. First of all, their website looks like little effort has been put into it. Secondarily, it looks like when you "invest" in this site, you are more investing in traders' actual positions (if they make money, you make money, if they lose money, you lose money), which is much riskier than giving a loan to fund traders' positions that gets repaid first when positions are closed.
BitMEx offers futures trading and AFAIK, no actual BTC is actually borrowed.