Yahoo has added blog results to its news search function.

When searching Yahoo News for, say, the term “vCard” (a topic I wrote about yesterday) you will see the normal organic results in the main window and Yahoo’s very own “blog results” in the right sidebar. The service is labeled as beta, but it is a sure sign of Yahoo’s plans to continue to expand the use of RSS, tagging, filtering and aggregation into its Search2.0 platform.