When I go to that (Mexican) restaurant, I see it is generally busy, especially at Happy Hour or Sunday brunch, which I don't bother with. I may be deluded, but for some reason, I don't think much of their business comes from people looking for points, although there is no way of knowing that. (I don't know what a Flyertalk points-crazed individual "type" looks like, but, I am taking a wild guess that that particular North Hollywood clientele is more interested in the cerveza than elite frequent flyer status.)
However,I do think people go there with the entertainment card, which I also use. But if the management cared at all, they should punch the back of my card so it becomes a single use thing, which they don't do. So, each time I go, I either use the entertainment card for a free meal (plus pay on a points credit card) or I might use a restaurant. com certificate, which I pay $4 for, and get $25 off the meal. I do have to spend $40 - 50 on food only when I use the certificate, so I wait for a family dinner for that one.
And I noticed those coupons for a free drink or a free dessert haven't been coming in lately--wonder why....