Although it doesn't mention it anywhere, here in the Product Description, on the authors web-site, or in the widget itself, this does not appear to work with Blockbuster Online in the UK.

Whenever I try to log-in with my known working email and password, I just get a "Login failed" message. I can log-in via the www.blockbuster.co.uk web-site perfectly.

So I guess this is yet another US-only product where the author fails to realise there is a world outside the shores of the USA.

If you don't make your product work for everyone, at least mention its limitations so that people outside the US don't waste their time downloading it.