Copy trading features are for people like you who don't have the time or skill to sit on a desk and observe the market to trade. Use copy trading if you think you are good with risking your money in another persons hands. Any kind of profit or loss that person will take from his trading activity directly affects your account. So its your money but someone else will be responsible for your profit and loss. If you copy an experienced trader who has a good trade record, then i don't think there is much to fear.