You joke, but that's coming soon (shameless plug - I co-founded BitMEX, https://www.bitmex.com/app https://www.bitmex.com/app, currently in a competitive simula

You joke, but that's coming soon (shameless plug - I co-founded BitMEX, https://www.bitmex.com/app https://www.bitmex.com/app, currently in a competitive simulation), and we completely understand the risk to casual users. Bitcoin has a remarkably low barrier to entry compared to most forms of investment, and the average user can easily get swindled. Leverage is a powerful but dangerous thing, but it is needed for legitimate business use, such as hedging held BTC. I agree that there needs to be a big warning on the box. We're working on a series of articles explaining margin trading to the layperson as well as an interactive introduction, but above all, investors need to take responsibility and be aware of what they are doing when they put their money on the line.