Markup semantics

[Nevon]

Someone should go over the markup and replace some of the elements with more semantic ones. I've only had a brief look, but some of the things I've seen so far are replacing some divs with header and footer elements, the countdown could be a time element, the fuzzy dates on the individual jam pages could be using microformats, each jam entry (on the jam page) could be a figure and figcaption, as could the avatar+username. The entry details table could be a definition list, but I don't think a table is wrong.