While musing on the Extinction Timeline I started thinking about when I stopped using certain technologies. Media and interface formats figure widely as a disposable technology and suffer heavy casualties.

The list also represents such factors as getting tired of building more shelves to hold bulky items (DVDs are smaller than VHS cassettes) and a peripetetic lifestyle that rewards compact items. From just these two factors alone, you can't know how happy I am in the iPod/mp3 world where music has become weightless. Others are due to a move to online resources.

5.25" Floppy discs: 1979

8" Floppy discs: 1984

Compact cassettes (data): 1985

Vinyl records: 1985

Compact cassettes (audio): 1989

SCSI Disk drives: 1996

VHS tapes: 1998

Books (from bricks'n'mortar bookstores): 1999

Magazines: 2000

CDs (audio): 2001

3.5" Floppy discs: 2002

LocalTalk networking: 2002

CRT displays: 2002

802.11b only wireless: 2003

Dial-up Internet: 2003

10Mbps-only networking: 2003

35mm film: 2004

Win98SE: 2005

Books: 2006

AM Radio: 2006

CD-Rs: 2007

MacOS 9 (Classic): 2008

Other contenders possibly coming soon are:

DVDs (replaced by downloads)
Software in boxes (download s/w and buy license key online)
Incandescent light bulbs (flourescents and LEDs)
10/100Mbps networking gear (Gigabit Ethernet)
IDE disk drives (SATA)

Remaining notably stubborn are FAX, postage stamps and paper bank statements.