The XFU is one of the best fansites with large forums and we at the X-Files Wiki would like to build an alliance with them. Essentially send people who came here looking for info on the X-Files on to them if they would like to discuss the series in depth.
Eat the Corn is actually one of the best sites because of its webmaster who checks in from time to time here. Take a look at it. Updates on recent X-Files activity, like with the comic book releases, and impressive sections on specific episodes.