Basically it's a 30 day trial from lovefilm but it ends when you send back the 8th rental or at the end of 30 days whatever comes first.
Then you can cancel your subscription but the Da Vinci Code DVD is yours to keep.
It only for first time users but I'm sure some of you will find ways around that.
The link does work but you have to delete all the start of it so it just leaves http:/www.lovefilm.com/partners/davinci.html
then it should take you straight to it