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Re:Google Reader Can Now Track Changes to Any Website - Even... by Groxx on Tuesday January 26, 2010 @01:50AM (#1077249)
/newest does a bit better, though it gets excited about changes in rating. And articles still aren't linked, though they're at least shown when they're new.

news.ycombinator's root page is a very un-feed-like page, I wouldn't expect any service to handle it correctly.

Re:Google Reader Can Now Track Changes to Any Website - Even... by oihwoefi on Tuesday January 26, 2010 @04:14AM (#1077406)
feedbeater looks like it generates it fine-- e.g.

http://www.diffbot.com/api/rss/http://news.ycombinator.com/

Re:Google Reader Can Now Track Changes to Any Website - Even... by Groxx on Tuesday January 26, 2010 @11:24AM (#1078010)
Impressive. I wonder what their change-detection system is.

And, after leaving the Google feed running for a bit, it found 3 new articles in the past day, on /newest. Definitely fail-worthy.