According to this website, they can measure how much is your blog:
So, mine is only:
"Your blog, www.brokenglish.blogspot.com, is worth $564.54".
What they don't do is to pay for it. Otherwise, I would have sold it already for sure.
One funny thing to do is to see how much are other people blogs:
Your blog, www.ciegaacitas.com, is worth $89,197.32
Your blog, dispatchesfromtheisland.blogspot.com/, is worth $102,746.28
Your blog, english.martinvarsavsky.net/, is worth $279,447.30
Post your blogs results!