As an answer to the title... as a matter of fact I think they do?!
I've checked out some UK websites showing that people really receive completely free Ipods. How is this done and what's the catch? Well you basically log into this website and try an offer (which you can cancel at any time).
Once you've signed one of the offers you start referring friends to join to. Once you've referred 5 friends to the website you apparently get sent the Ipod of your choice! My friend did this and he received an ipod 3 months ago. So now I'm posting it here to see if you guys know anything about this?
ive heard about it from a few people but have no idea as to how real it is. ive never really been a beliver of this type of thing, but thats just me. plus it seems too much hasle for me, or you could argue i dont have enough friends to refer, heh.