carguy84 - 1:41 pm on Feb 24, 2007 (gmt 0)

If it were me, I'd be keeping track of domain names, IP Addresses and date last visited. Any domain based change is going to show up as an IP Address change, so that eliminates any domains which suddenly show parked pages, change of ownership, expirations... Then I'd programmatically compare the homepage of the cached version I saved to the one I just fetched and if the differences reached a certain threshold, I'd kick off an alert email to myself. And if I was bored enough, I'd keep a running save of cached pages to do even better comparison analysis on.

Chip-