I wish I had read those online reviews before getting 3 certificates from a reward program. I had no problems using the first $10 cert at a Shabu-Shabu restaurant after calling first to confirm they do accept the cert. The next $15 cert cannot be used since that Mexican restaurant changed the management and was closed. The 3rd one was a $25 cert at a Japanese restaurant and the restaurant had confirmed they would honor the certificate before I brought my guests there. However, after the meal of $55, they told me this certificate has become invalid since the day it was issued. I tried to call the 800 number, but they don't have a live person to take your call or a msg box to take your msg. I then wrote an email to Restaurant.com and there has been no response. This business model cannot and should not succeed without a major overhaul. It's unlikely that I will use them again based on my poor experience.