Kevin Werbach asks : " Anyone know of a good change notification [i.e., website tracking] tool that still exists?" With the caveat that I worked as a consultant for iMorph, I will recommend that company's InfoMinder service.
Here's a white paper I wrote for iMorph. The service reports back to you in an email digest, or on a web page, and in the latter case does a nice job of change highlighting.
I have to admit, though, that I don't use it myself much nowadays. Increasingly I rely on other people to filter raw information sources for me (as, I presume, they rely on me), and I access those human filters through RSS-enabled weblogs.
Former URL: http://weblog.infoworld.com/udell/2002/07/26.html#a355