Egg, Sausage, Chips and Beans

I have a Blog This! link on my Firefox Browser. I am supposed to be able to highlight a piece of text on a webpage, hit the Blog This! button and a new window will pop up with the ability to send the webpage link plus highlighted text to my blog as a new post. But it does not work. I get the pop up box and all looks okay so I hit publish, but nothing appears on my blog.

If anyone knows of a resolution to this problem, please be in touch. Thankyou most kindly :-)