Startuping.com has been launched which aims to act as a resource for entrepreneurs, particularly those based in web-related areas. The first post to kick things off is an interview with well-known entrepreneurs about the best and worse decisions they made while starting their companies:

Best and Worst Decisions - http://www.startupping.com/2007/02/20/best-and-worst-decisions-part-1/

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Updated 2021 : note that the above post is out of date as it was originally published in 2007, but is left here for archival purposes. I have unlinked the external link as it is now dead.