Good platform except...
I've been using the Open E Cry platform for a couple of years now with no problems. It is relatively easy to use, has a good DOM, and many good features. I would generally recommend it, however, recently there was a software glitch where I had a series of market orders rejected for reasons that OEC never was able to identify. I see from some earlier reviews that they had also software issues earlier in the year (which they also apparently could not identify). In summary, OEC is a good, user friendly platform but beware!