Facebook Share doesn't show my description or my thumbnail

Question

I have followed every single piece of advice I have found to try to get this to work but all of it has been to no avail. Can someone tell me why my description/thumbnail doe

Answer 1

--2nd EDIT--

Please note that this answer doesn't work any more and is out of date. Please try the above answer.

-- ORIGINAL ANSWER--

Got it sorted. Had to use a url that is chock full of craziness:

--EDIT--

As some extra information, I can't remember where I originally found this information but here's what the s=100 part means:

The basic approach is you are providing a link to http://www.facebook.com/sharer.php?s=100 which is the basic share page (typically this is shown in a popup).

But I tried changing the numbers and it still goes to the same place.

As for the &p, it's just html code for &p and I think this is the array that Facebook dissects to get at the information.