It is very nice, light plugin you have made. Thank you.
I have encountered a bit strange "bug". If I copy this address and try to use directly in my facebook timeline, then all is as it should be: the title is the homepage title, and the description is the homepage descrition.
But at the same site (the homepage) I also have the like button by your plugin. But when I press the like button it takes the mentioned above fields from the lovest post in the page!
Is it something that you can help with, or is it something that Facebook needs to fix?
P.S. I use Presswork based theme.