I recently found this fun program designed to calculate the worth of your blog. I’m not sure exactly how this number is being processed, but I assume that it involves the number and pagerank of people linking to your blog. Here’s my blog’s current worth:
You can enter any blog’s URL to see its ranking, which can be hours (or at least a few minutes) of fun. One note: it only works for blogs, so entering most static websites will pull up no value.