Hey, I'm linked to from the Carnival of Evolution 32 hosted at Denim and Tweed - a blog by biology graduate student Jeremy Yoder. The link "thoughts upon the origins of species" links back to Monday's Teaching Evolution in a Biology Class... post. Cool.
Blog carnivals are hosted by bloggers (usually otated among different bloggers) where submissions are sought for a variety of blog posts on a specific topic which are then collected into a single posting called a carnival. Here's a site that lists all of the ongoing and upcoming blog carnivals.