I see these days on Facebook a lot of "Contests" where you can win an iPhone or other gadgets if you subscribe / answer to a question / like a page, etc. I know there are no real prizes, those are only other ways to make some money. The question is: Where I should start if I want to make such "contests" for my friends? I think I can do a lot of money from those who dream of winning a shinny gadget... What kind of money making technique is this, by recommending to your target audience to answer a question, to complete a survey or something? Thanks!