I've now set up a method allowing visitors to my blog to rate my posts. If you to go a single post's page, you will see down on the lower right of the article a rating box. You can choose anything from 1 to 5 (5 being highest, 1 being lowest) and then vote.
After voting (assuming you have cookies on), you will see the overall current rating of the post. This is to just give me a basic idea what people think. Please note that if for some strange reason, you decide to come up with some method to vote multiple ways, you really won't be accomplishing much, as the voting is simply a gauge for myself, and the overall rating value in the end changes nothing...
But please feel free to vote whatever you feel any post deserves...