Chad Dickerson at InfoWorld.com presents a very interesting article on the top 20 IT mistakes to avoid, essential reading for IS Managers everywhere.

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Updated 2021 : note that the above post is out-of-date, given this post was originally published in 2004, but is left here for archival purposes. The external article link, http://www.infoworld.com/article/04/11/19/47FEtop20_1.html, is now dead so I have unlinked it.