I've been using it -- and I've already saved a lot more than $7 in long-distance charges with it! I have friends and family all over Canada and the US, and several friends in the UK - the ones in the UK have been on it for some time and were wondering why we're so backward. I think it's great, and it really is free!
Oh, and by the way, I have no intention of telling my customers I'm on it - I certainly agree that I don't want to talk to them. They won't find me unless they search on the right name or email, and I'm NOT using my eBay email address.
Glenda