I like how user friendly this system really was, easy navigation through pages and modules etc - however we did have some difficulties with integrating essentialskillz into our own website but once again they were very helpful in getting us sorted so as not to be left without an answer! So far all i've heard about ES from colleagues and customers has been good which makes me feel more confident using them now! Not much at present although there could always be problems down the line if you're considering utilising this platform do your research first- no point wasting time or money when things don't work out well.