I just poked around the site and I'm sorry to say I don't think it's a parody. Just reading the Harry Potter article, I felt sure it was a parody because it was SO extreme. But all the other stuff on the site is very much like other extreme/paranoid/off-the-deep-end "Christian" harangues I've seen. In fact, I recognized the name of one contributor and I know he takes himself seriously.
Other enlightening "facts" from the site:
* Pokemon uses "cute little characters to teach children Witchcraft and Satanism."
* "Country and western musicians do not have lyrics that glorify satan. However most are talking about sex and who is doing who."
* Role-playing games "directly embrace wizardry, channeling, demonic possession, sorcery, black magic and vampirism."
* The Episcopal Cathedral of St. John the Divine in New York City "has become the mother institution of the New Age movement in the United States, whose goal is to eclipse the Age of Pisces (Christianity) with an Age of Aquarius (Lucifer)."
* There's a picture of Laura Bush giving a "Satanic salute."
* The Ku Klux Klan is demon-possessed. (OK, even a stopped clock is right twice a day... )