A while ago, I read a fun book called Keep Your Brain Alive. The gist of it is that in order to maintain an optimal mental state and keep the brain on its toes, people must switch their routines often and regularly try out new things. I think that to an extent, this supports the eXtreme Programming philosophy of Embrace Change.
In any case, changing your blog layout can actually be one of these routine changes, so good bye 2006-2007 look!
For the next few days, I will be experimenting with different looks, so don't be surprised if the layout keeps changing.