When they introduced it, I decided to wait and see what was going to happen.  By the number of comments from unhapy users, and the system not working, I still don't use them.  Stuck with Click and Send, yes it's a little dearer, but it works. Perhaps once it's been going for 12 months or so, and the glitches have been fine tuned, I may consider using it then.  Why create more headaches for yourself.