lucy24 - 10:18 pm on Jul 17, 2011 (gmt 0)

In the specific case of geocities: Is it even worth it? If geocities links are still present, it means that either nobody has bothered to click on the link since late 2009 and then tell the webmaster they've got a bad link, or that the webmaster in question isn't actively maintaining their site so they haven't bothered to update links. Either way, seems like the time needed to investigate and act would far outweigh the value of the link.