It turns out that Feed on Feeds + this incredibly simple PHP XML-RPC library = your own Technorati. Well, okay, not quite — you'd still have to write your own app to crawl the internet for new blogs and add them. And I have some concerns about using the FoF RSS reader in a shared hosting environment — seems likely that those lengthy 4x/hour blow-crawling sessions are going to start getting noticed by somebody eventually.

But for now, and for a limited pool of blogs (say, all the DC-related ones), it's working pretty well. You can probably guess where this is going...

Anyway, why would I want to do this instead of just using Technorati's open API? There are a few reasons. One, to restrict the search results to a particular pool of blogs that I have control over. Two, to avoid paying Technorati money. And three, for fun. Sort of.