If you're a blogger and want to make yourself sad (and really, why wouldn't you?) check out how much your blog is worth at Dane Carlson's Business Opportunities Weblog.
You just type in your blog 's URL and hit submit. Within seconds you'll find out that blogging is easy, but blogging professionally is not. Fortunatley most bloggers are in it for the fun and attention. Technogeekboy is worth something, but not much (see below).
For some real fun check out what blogs like Lifehacker and TechCrunch are worth. Zoinks!
How Much is Your Blog Worth Dane Carlson's Business Opportunities Weblog