Neat little demonstration of an idea - use Google and other gizmos to track links of a starting post - both backward and forward in time - and create an RSS feed out of the results. "By using this sort of algorithm to generate an RSS feed of links, it becomes possible to subscribe to a feed that will keep you updated of all the downstream posts."
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] [![Image from the website](https://downes.ca//files/images/post_47380.jpg)