Working out some code to make your blog nicer, easier to work with, or something else is a bit of a privilegde, and a good reason to run it on your own server.

The change I did this time is invisible to you, and involves loading the tags cloud (over there to the right)... before my change, it was really an integral part of each page, which meant that whenever it changed, every page was rebuilt (it's comparable to throwing away your cache, except more time consuming). I changed the whole thing so the tags cloud is now in its own file, and is loaded by every page using php's include_only. Voilà, much less rebuilding!