victor - 8:56 am on Nov 14, 2002 (gmt 0)

SEOPTI:
It also seems to me that dmoz and google are completely unable to handle this situation. They aren't able to delete expired domains from their database when they expire.

This applied to any site with a link to anywhere. At any moment any of the sites I link to could expire, or could be replaced by a site promoting nigerian spam porn.

I don't check for this sort of thing regularly enough. Do you?

I do run Xenu Link Sleuth a lot -- but that only tells me broken links -- it may be a downed server rather than an expired domain. Does anyone know an equivalent tool that will run a DNS check to see if a broken link is due to an expired domain?

And, even if XLS gives a link a clean bill of health, I don't know that the link I made is still to the original content. Does anyone know a tool that will highlight substantial changes to a page, flagging it up for eyeballing?

Thanks!