The most time-consuming one was retagging all of my past posts into a more useful and comprehensive system. This will probably make minimal difference, especially compared to how long it took me, but I will never again have to tag something as being "drama llama" just because I thought it was a good idea three years ago.
I created two pages which can be found in the tabs just above the posts. Hooray.
I also rearranged the sidebar a little bit and updated my blogroll to reflect what I actually currently read.