I happened upon this purely by accident.

My bank recently sent me a new check card. I noticed that the MyPoints dining pogram (which is administered by iDine) is now free. It used to have a cost attached.

Since I had my other cards linked to other iDine programs, I went ahead and registered the new checkcard with MyPoints. When I checked my MyPoints balance today, I saw that I got 100 Points for registering (even though this is not advertised on the link and I didn't get a confirmation pop-up).

I hope some of you can use this.