BlogDigger, a RSS and blog search engine, provides services such as media search, link search and grouping of blog results. Media search pertains to RSS feeds on media types such as mp3, WindowsMedia, QuickTime etc. Link search provides information on sites that back link to a particular website, tracking the train of linkages among blog posts.
Blogdigger uses state of the art syndication technologies, such as RSS and Atom, to index blog content and make it available for search. Blogdigger also makes all search results available in RSS or Atom, so users can subscribe to keyword searches and automatically be notified, via the News Aggregator of their choice, of new content pertaining to their interests. Blogdigger searches thousands of RSS and Atom feeds, and is built-in to many popular News Aggregators, such as FeedDemon and NetNewsWire.
Interview quote from Greg Gershman of BlogDigger:
There are many centralized RSS aggregators out there, but Groups is the only one that allows you to create a subscription list in a collaborative fashion. I?ve always liked the idea of combining the editable nature of wikis with the content nature of blogs, and Groups aims at that, giving you the option of allowing others to collaborate in the creation and editing of a Group by adding and deleting member blogs/feeds.
The idea was to create an open, self-organizing directory of feed groups, so people looking for blogs or feeds on a specific topic could come, search through our directory of Groups, and get a ?starter pack? of blogs on a particular topic.[SEJ Blog]
Blog, Search, Blog Search, Search Engine, Blog Search Engine, RSS, Atom, BlogDigger