If I go to http://vanillaforums.org/download I do not see a "free next to cloud". I see a nice blue "Download Now" button and clicking on this doesn't redirect me anywhere but instantly starts the download process. There already is a form but it doesn't change the button if I use that form or not.
When trying to download Vanilla 2.1.8p2 i get this error: HTTP ERROR 400 Problem accessing /uploads/form/v2/xxxx/8fe5349a-e5bc-403c-9962-ba3bd688f9c0. Reason: HTTP method GET is not supported by this URL
We use that form to capture info in case we need to notify users of software issues ect. Seems to work for me, but I would also suggest you sign up to make sure you get any software notifications if we send them out: http://eepurl.com/FmdZD