I have installed the Ultimate Facebook plugin which works

Hi,
I have installed the Ultimate Facebook plugin which works fine, but when someone clicks on Facebook "Like" on my blog page, it does not show on Facebook unless they put a comment. Am I missing a configuration with the plugin?
Here is an example of a blog page with Ultimate Facebook plugin http://www.123ehost.com/seo-and-the-need-for-great-content/

thanks
Sam