Hi
I tried one of these sites to get a free Wii. The difficulty I had was that the link I sent people who signed up for 'the film deal' did not contain any code to link it to me therefore I did not get the referral. The staff on the 'free Wii' forums were helpful but stated I needed x, y and z to prove that the referrals were linked to me. Only one friend had kept a note of details by saving web pages as she went and they did credit me with her as a referral true to their word, however, I needed five.
I think you'd need to get your 12 friends to agree to definitely do it, contact the promoter and ask them how to ensure that any take up of deals is linked to you and try it from there. I was at the stage of offering people the £10 cash to join the Bingo site (£50 for a Wii is good!) and spend my money to get a Wii, but didn't as I was unsure how the referral system was linked to my account for the Wii and didn't want to waste £50 in an experiment.
I ended up buying a Wii (they weren't in the shops at the time I started the pyramid scheme).
If you are going to try it make sure you have friends who will definiely take up the referrals and also you contact freetechnology.co... and ask them how you ensure that any take up of offers is credited to you.
Also please note that these promoters record the IP address from where the offers are taken from, so if you have 12 friends round for a beer and they all agree and do it from your PC you will get no referrals - they need to do it at seperate computers, it's in the small print! From looking at all this quite extensively I think it operates like cashback on mobile phone bills - they do pay out but the rules are tight.
Do your homework and read the small print before working out if it's worth the hassle. Good Luck!
Perhaps you can end the 'do these sites work' debate!
Don't know if this helps or not,
Regards
saru