Do you know How much is your website valuable?

It's very funny!! Go this website: Domain Name Appraisal and fill your site name, it will appear your value. Of course, I don't know how he get your value, maybe it's a reference only. ^_^ If you are interesting, try it>>Domain Name Appraisal
PS:
http://itlifeday.blogspot.com == $31 (This blog)
http://www.microsoft.com == $24,987,503.00!!!
http://www.google.com == $10,875,620.00!!!

Which is the most valuable website?