Preachers Divinity was an old message board made up by fans of the comic. Ran for years and was awesome, these guys would have loved the series. Back in the day James Marsden fave for Jesse and Colin Farrell fave for Cass. Unfortunately cant see threads anymore but webite still exists.
A lot of the old school Preacher's Divinity crowd are still posting on a different forum called Hondo's Bar (including devilsadvocate8). It was named after the pub where Jesse and Cassidy meet just before the end (and of course the John Wayne movie). We still discuss comics, movies and tv shows (including of course the new Preacher show) among other things. And we're always open to new members http://www.hondosbar.com/forums/