Google has what at first brush looks to be a great feature. You can search on pages that link to your pages. However, it appears that this works ONLY if Google has indexed the pages. For example a google search on the Internet Sympathy Card comes up with several links including a page from Scripting News. This page links to http://www.brauer.org/oklahoma/. Do a search on link:www.brauer.org or link:www.brauer.org/oklahoma and Google says there are no links to them.
Why this matters? It would be a useful tool. For example there are many stale links to the Internet Sympathy Card's old home at http://www.fortnet.org/oklahoma/. With a quick search I should be able to find the list of folks I need to contact. Read more about Google's link: has it's limits