Web Page Rank Check Tool

I found one web page rank checking tool: Google PageRank Checker. It is very easy to use. Just type in a URL and then verification code, you will see the rank for the web page. Here is the detail explanation about PageRank at WikiPedia with the formula how a rank value is calculated.

Here are results of my blogs. All are either 0 or N/A. Here is only one with 0:

This blog: