A little housekeeping

I’ve made some long-overdue changes to the blog layout and categorization. You may or may not have noticed, but:

• the categories are now streamlined to better reflect what’s actually in them
• the Google ads from the right sidebar are now gone, since they were basically just an annoyance
• the RSS syndication info in the “about” block of the right sidebar now works
• the monthly archives are gone, replaced by a list of category archives

I still have a number of other things to tweak, but this is a good start.