Technorati has added a (beta) blog finder service. Previous searches for terms or tags returned matching posts. This one helps you find blogs that frequently post on a topic, as determined by tags associated with the blog. It looks like blogs were initially assigned tags from those on its past posts. You can manually associate up to 20 tags with your own blog if you have “claimed” it. Query results are presented in order of blog authority as measured, I believe, by the number of in-links. This definitely looks worthwhile.

The query capability is quite limited, however. It looks like you can only issue simple queries (e.g., blogs tagged with AI) or disjunctive queries (e.g., blogs tagged with AI OR Artificial Intelligence. Operators for conjunction and negation are not provided.

(Link , Link)

The WikiProject Semantic MediaWiki provides a platform to discuss MediaWiki extensions using semantic web technologies to support machine processing of Wiki-content. The project aims to develop a single solution for semantic annotation that fits the needs of most Wikimedia projects and still meets the Wiki-specific requirements of usability and performance. I think this is an exciting project with a lot of potential. Wikipedia, for example, is marvelously successful and has made us all smarter. I’d like my software agents to have a Wikipedia of their own, one they can use to get the knowledge they need and to which they can (eventually) contribute