If you want to track patterns in your blog, this is an awesome site: Wordle. (Courtesy of Cristen's blog.) It picks out words that are found frequently in your blog/site and makes a pretty picture with them.
Here's the Wordle for this site, with some editing to remove random web addresses:
I find it interesting that, even though well over half of the entries in my blog have been since I left Japan, words relating to Japan definitely dominate here. Clearly I must write more.