Another sad person who thinks this kind of thing works.
Yes it was on the BBC Newsnight programme and yes, in theory, it works. Unfortunately, it's just the same old pyramid scheme (Google it) of old but re-done for the internet age.
You have to pay money up front (usually £5) to at least one of the offers and then get another 13 people to do the same thing. If they are also trying to get a free PS3 then they also need to recruit 13 people to do the same thing and so on.
By the time it has got six levels down, over 62 million people need to have paid a fiver (more than the population of the UK), at seven levels it's 815 million people and at eight it's over 10,000 million people (approx the population of the world).
If you then factor in the number of different websites doing this and the number of different products each offers and the fact that most people sign up to try and get a TV, PS3, XBox 360, Ipod etc, the numbers start to get stupidly high much quicker.
The only winners here are the referal websites who collect commission for each offer taken up and the companies like Gala Bingo or I Love Film who get the business.
Trust me - they wouldn't do it if it was easy to get the freebies, it wouldn't make commercial sense.
As for the supposed "proof" - do you actually have anything other than a website where people boast about how much free stuff they have got? Ever stopped to think that the only way they might actually get free things is to get you to sign up to the offers as their referal by making you think it works?