Jump HQ:Official site. Features audio and video journals, tour schedule, a streaming Jump audio player, and a store with items from the J,LC era, along with a few hidden elements.
Opium [squared]:Semi-moderated online fan community featuring message boards, a listserv, and The Opium Den, a comprehensive fan directory.
Dressed Up Like A Rock-n-Roll Star: Extensive listing of Jump songs, including RealAudio and lyrics for some rare tracks.
Dusty With Neglect: Vertigo-era site is no longer updated, but features radio station numbers for requests and a concert review from the Underdog Tour.
EyeMusic: Fan site includes comics, radio station information, weblog, two essays from a fan's mother, and photos for viewers to give captions.
I Can't Get Enough: Photographs, article archive, links, Tater Tomater information, and personal views.
Jump and Me: Photos, quotes, and a concert log.
Jump, Little Children: Includes .wav files from Magazine and concert photographs.
Jump, Little Children: Fan site with band information, concert pictures, and January 2000 Tremont Music Hall setlist.
Just the Breath of Dust Settling: Pictures, links, art, and graphics.
Matchbox Whistler's Jump, Little Children Guitar Archive: Guitar tablatures and lyrics.
Operation: Jump, Little Children: Fan page includes lyrics, RealAudio, Opium information, tablatures, photos, and tapelist.
Seven Days: Fan site with biographies, a discography, FAQ, pictures, e-cards, webring, and links. Also includes personal information, quotes, message board, concert log, and stories submitted by fans.
The Bubble's in Trouble: Thumbnailed photographs taken at assorted live performances.
The Ethel Merman Institute for the Criminally Insane: Official bios, the Bobbyist Manifesto, lyrics, and some original material including a Jump inspired poem, a story using song titles, a concert review, pictures, and Matt's response to an Opium survey.
The Innocent Kiss: Includes photos from a show in Nashville, a now-closed contest to identify fans and members by photos of their mouths, and lyrics.
Underground Elite: Jump's official street team, featuring promotional materials, periodic contests, and an email update list.