A blog, where people can fill in a form, and after they submit the form, they will be redirected to a page that generates a PDF file.
Now,it works, at least most of it. I used Contact Form 7, and Cforms, but with both of them, after the redirect, a warning (in IE8) appears on top of the browser, saying that just must be carefull downloading a file. If I klik the yellow bar, the next time I submit the form, the PDF file is generated just as I wish.
I’m sorry to say that I don’t know what Contact Form 7, and Cforms are. Here at wordpress.com we do have a contact form we can use on our blogs. This is the relevant support entry link > http://en.support.wordpress.com/contact-form/