I'm on my 3rd one now, The only problem is I won't know if the MyPoints thing works for a while. The seem to work with me when I have problems so (they have even credited me twice for the same purchase before for a mistake they made) So I will bookmark the site that says "Purchase an Entertainment book now and earn 200 Points" and quote them on it if there is a problem.
In the st. louis area there are 4- $5.00 off coupons(gift certificates) for our local grocery store in each book. So the book is a no brainer. I'm going to buy a bunch and the 200pt will be a bonus.
(its taking forever to buy them though, slow website)