RSS, OPML and the XML platform.
Copyright 2003-5 Randy Charles Morin
Of late, I've been enjoying IceRocket Tag Search. It's fast and current. But not enough people are getting their blog entries indexed. Like Technorati, IceRocket uses the RSS <category> and tag spaces for tag indexing. Here's some instructions, which I plagiarized from IceRocket (fluff removed). Hope Mark doesn't mind.
How do I start tagging for Blogs.IceRocket.com?
If your blog software supports categories and RSS/Atom (like TypePad, Movable Type, WordPress, Radio, Blogware), just use the included category system and make sure you are publishing autodiscovered RSS/Atom and we will automatically include topics with your posts! Your categories will be read as topics. For example:
<category> [topic_name]</category> <dc:subject>[topic_name]</dc:subject>
If your blog software does not support categories or you are not sure, you can still start tagging. To associate a post with an IceRocket Topic all you have to do is "tag" your post by including a link with a defined topic relationship. For example:
<a href="http://blogs.icerocket.com/tag/ [topic_name]" rel="tag">[topic_name]</a>
Once you have posted the tagged post with some topic, there are two ways to have your post included on an IceRocket Topic page:
If your blog software is configured to ping IceRocket, you are finished!
If your blog software does not support automatic pinging, or you have not set it up yet, or you are not sure, you can ping us manually. You might also want to configure your blog software to ping us automatically so you don't have to do that every time.