I first found out about it after i got an offer from amazon local and when i mentioned it to someone else, they said to try group on. Then i got totally hooked, bad part, one place completely stopped taking them and expiration date was months away- they refunded me for that-
However, i have been having an excruciating time with at least 3 other group on deals, and groupon's response, that i can still use it even if the promotional value expires, that the actual amount paid does not expire, what good does the do me when they're not calling me back at all! AT this point i'm more at a lost- i should have stuck with amazon local, they have less deals, but i have not had a problem with them at all.