Am I brain damaged or is Technorati? There doesn't seem to be any way to search for posts older than 7 days. Makes Technorati a bit less useful as a research tool. Other than pissing contests, what's the purpose of a search engine that goes only 7 days back?
For example, try digging around for information on iRank, the blog ranking algorithm devised to reflect information epidemic effects. You may have to use "infectious epidemic" to get anything useful. On Feedster.
Since I nailed the folks at Waypathbefore, I have to give them kudos for doing a pretty good job on this topic.