Link Pick of The Week -- Bad Fads Museum

Although most of the items listed under collectibles aren't really Bad Fads, it's certainly an interesting read. And although the site claims 8-Tracks are being sold for pennies on the dollar, there are still lots of folks collecting them.
Bad Fads Museum/8 Tracks
Reel Obsession keeps 8-tracks Alive!
and last but not least -- 8-Track Heaven