On the Human Clay CD if you look at the inner spine of the CD you'll see a set of coordinates with a few missing numbers. Well the rumor was that the coordinates point to the location of the crossroads on the album cover. If you went there you'd find something burried and would win the band's equipment used to record Human Clay. In the end this "contest" was never held because the coordinates point to a location on a biological preserve or something and you can't dig on that property.
The site you are referring to was run by an Australian Creed fan and I think the site is no longer up