I have been a member of LETS for a few years, find it a good concept, but limited in it's range of trading opportunities, (for me, anyway). I have quite an amount of "points" in credit but find it not easy to find something to spend them on.
LETS groups vary though, and others may offer more. My group is "comprised mainly of the "Hello Earth, Hello clouds Hello Sky" mob, and although I am largely in sympathy with them, there are not many choices for me to take up.
Had no experience with CES, although some Lets groups may use it, mine doesn't.
