I spent a couple of minutes today (after a very long time) in bothering to check what SiteMeter's counter had to say.
Note that while my SiteMeter counter shows a number on the counter, a lot of Sitemeter counters now don't appear to do so ! :( Maybe they changed their policies to give out such counters only for paid accounts ?!
It's interesting to know what your readers are reading, where they are possibly coming from, what timezones, corporations, service providers, etc. I understand that this could probably be a subset of people using the blog, others reading it via RSS/ATOM feeds.