Trading is obviously not a risk-free environment, and it touches upon both trading itself, as the process, you know, and brokers. Apparently, finding a good broker is a very first step needed to be undertaken by the trader, coz it directly influences trading results. Fake/lagging quotes, slippages, requotes, absence of the basic kit of instruments, poor withdrawal speed - it's smth that have to be avoided.
XM realizes that and it's not a rocket science to understand that if they've been working for such a long period, then they don't have issues listed above. I tried myself...