Kevin Werbach has an interesting requirement” “What I want is something that goes out automatically and checks for changes on sites I care about, and lists changed sites on a central Web page.”
Udell recommends iMorph’s InfoMinder service. [Udell’s White Paper for iMorph]
For weblogs, there is Userland’s weblogs.com. It would be nice if sites could do a “ping” to a central service like how blogs do to weblogs.com.