Are these high-tech's five biggest losers?

Here are five of the most high profile losers in the high-tech and ebusiness arena. Read the stories and let us know what you think.

Are some of these companies undeserving of the tag, or can you think of any bigger failures. Register a reader comment below and let us hear you suggestions.

1. WorldCom...
...fraud sends markets tumbling
http://www.silicon.com/a54177
..."We're no KPNQwest"
http://www.silicon.com/a53983
...CEO ousted by the board
http://www.silicon.com/a53012

2. Boo.com...
...founder admits surprise at bankruptcy
http://www.silicon.com/a48763
...film rights sold
http://www.silicon.com/a50074
...founder writes book chronicling his spectacular failure
http://www.silicon.com/a48491

3. Marconi...
...stock spirals towards oblivion
http://www.silicon.com/a46388
...asked to give back £1bn
http://www.silicon.com/a53441
...reports record write-down
http://www.silicon.com/a52942

4. NTL...
...files for Chapter 11
http://www.silicon.com/a53206
...credit rating hits rock bottom
http://www.silicon.com/a52413
...fritters cash on frills despite 5,000 redundancies
http://www.silicon.com/a46256

5. WebVan:
...flogs the van
http://www.silicon.com/a50497
...shares soar past $400
http://www.silicon.com/a46044
...gone but not forgotten by angry shareholders
http://www.silicon.com/a45986