g1smd - 11:31 am on Jul 14, 2002 (gmt 0)
There is an automated system that scans all odp entries every few months and red-marks all 404 entries. This generates tens of thousands of entries every time. It's amazing how 'fluid' the web is. People change page urls seemingly for the sake of it, don't leave redirects; or don't pay their hosting fees, or go out of business, or change their domain name. It is a lot of work to keep up with all this.