Corante has an interesting article about how RSS threatens to sow the seeds of its own failure by creating such a wealth of data sources that it becomes increasingly difficult for users to sift through all the "noise" to find the information that they actually need. There is also some good comments about why Technorati's tagging ssytem is funademntaly flawed: "The problem at the core of tagging is the same problem that has bedeviled almost all efforts at collective categorization: semantics. In order to assign a tag to a post, one must make some inherently subjective determinations including: 1) what’s the subject matter of the post and 2) what topics or keywords best represent that subject matter. In the information retrieval world, this process is known as categorization. The problem with tagging is that there is no assurance that two people will assign the same tag to the same content. This is especially true in the diverse "blogsphere" where one person’s "futbol" is undoubtedly another’s "football" or another’s "soccer"." Hmmm, will be interesting to see how this pans out ....