Clearplay Video Filtering Questions?

http://www.clearplay.com/

Can anyone tell me how this works?

As I understand it, I buy a Clearplay DVD player for $99, and it comes with a trial USB download that filters 250 movies (the list of those movies is here) If I like the service, then I pay a subscription of $79 a year or $7.95 a month, and I get 100 filter downloads each month - do I choose which filters, or do they? Does that mean I have to wade through lists of movies every month? And I rent or purchase DVDs that I want to watch, they don't provide that, is that correct? All the service provides is filter for certain movies?