Extras in the mail

[hearthstone]

So I'd ordered a book via Amazon, from one of their affiliated stores, called Meditation: the Complete Guide, and it arrived today. Along with a little pamphlet called "Who is Jesus?" by someplace called "The Tract League." Now I'm wondering whether they put it in because I ordered a book on meditation (and clearly need to be warned against it?), or whether it's a regular part of some employee's individual spiritual outreach.

So I went to their website, out of curiosity (they seem pretty innocuous as these things go) and they have a wide variety of tracts.

But none about pagans--should my feelings be hurt?