The following sites have REAL information about various J-Rockers. If it weren't for these sites, I would have nothing to make fun of. Then I'd cry. Then you'd laugh. Bastards.
Official Sites
General J-Rock
The Japanese Channel - although it will never be updated again, it still has great stuff. Gee, the name reminds me of something...
JRocker.com - JRocker webring. Probably give you more links than I ever could.
Personal Faves
Tattered Cloth - a Dir en Grey Shrine
Invasion Dream - a site about indies bands by the same woman who does Tattered Cloth. (very cool chick)
The Lighter Side of Black - Fuckin' FUNNY.
+poison~ - More Dir en grey. Interviews!
The Blue Sky Complex - Lots of J-Rock. Videos, reveiws and other good stuff.
Secret World of Malice Mizer - again, no more updates but still a good site.
Visual Kei on the Rocks - J-Rock webcomic!