Many people use the Satanic Bible to advertise thier organization or group, its not a big deal. What it tells you is that you have a very active Setian (or group of them) in your area. If you visit the mentioned website and read through their material you will notice that the organization is a "cult" in the true definition of the word. I would try and stay clear of them though, they tend to try and convert people, it is rather annoying.
The cards are no real harm, if anything stick in a few Church of Satan
adverts into the book along side the ToS ones. People are going to make up their own minds and hopefully do the research to find out that the ToS is a sham organization not worth their time, if they do not notice that, well they were not Satanists to begin with.