Gary, my kids went trick or treating every year when young (dad did not join jw's until later) and I can tell you from personal experience the kids have no interest in any attached reading material of any kind when going through their goody bag.
Can't say that I ever found them in my bag when I went trick or treating as a kids. Nor do my kids get them in their bags when I take them out trick or treating. That said, my friends and I use to read them with great interest. My favorite was "This was your life." Still though I am not endorsing the site, just pointing out how witnesses can use this holiday in a tongue in cheek kind of way.
That chick.com site is scary, as it shows that some Xians are willing to exploit the scariness of Halloween in order to push the fear of Hell. I guess a small publisher has to make sell their publications if they want to run with the big dogs.
Yes, indeed, some of those tracts are quite scary. I also like the parody chick publications site. Here is my personal favorite.