RSS Duplicate Detection ･ 詹姆斯August 18th, 2006 Detecting duplicate items in an RSS feed is something of a black art. How does one uniquely identify an item in a feed while still allowing for that item to be updated? RSS 2.0 has a guid element that fits the bill perfectly, but it’s not a required element and many feeds don’t use it. As a result, aggregator authors are left guessing, and nearly every one of them guesses differe
