Change info posted to wall when facebook "like" clicked

I am having trouble changing what is posted to the users wall when the like button from my page is clicked. Here are the pages where the like button is located, it posts the same no matter where it comes from: [login to view URL] (app page) [login to view URL] (app canvas page) [login to view URL] (actual fanpage) As you can see, when clicked it posts to the user wall with a title of "Untitled Document" and a url to the root of the domain the canvas page is hosted on. Example: [login to view URL] I want to change the info posted and add content or description. I have tried changing the page <title> and <h1> tags and have used all options for the Open Graph tags, example og:title Please help me change this info that posts!