Taking the Pulse of Relay blogging

Continuing the exploration of Relay blogging, I was tipped by Mike Mitchell to the BlogPulse tool by Intelliseek. It scans all the blog sites it is aware of and graphs the hits for a key word or phrase like "relay for life" as a percent of all its blog posts.

So here’s the graph of mentions of Relay since mid-February. Hmm. What do it mean?