I uploaded the sample to a free GoDaddy hosting account I got from domains I have with them. Everytime I run the application from within Facebook, I get a 500 error. When I look at Fiddler I see the following in the response:
Compiler Error Message: The type or namespace name 'Dropthings' could not be found (are you missing a using directive or an assembly reference?)
Dropthings is an AJAX reference and there is nothing in my code that references AJAX. When I upload to a subdomain on my main hosting account, it works fine. If anyone knows why this may be then please speak up, otherwise let it be a warning.