They are mostly spam, but the ones that are legit are a waste of time anyway. The payout is $50 and you get 1c per hour your computer is connected to the internet, you would need to be connected to the internet 5000 hours or 208 days before you reached payout. Also you won't be able to build a good downline as people won't trust you to install anything on their PC.
Well since its a .info domain its pretty fishy since they are 1.00 from godaddy. My main website is a .info domain but I don't get my users to install anything or offer them money, I have a psp download site.
I'll never trust a .info domain name - if they are too cheap to pay $10 for a .com domain they are probably not legitimate