This works best if you have a lot of friends, as I will give you money for each of them!
I'm paying $0.5 for each package of like/share/+1/tweet/pin ! I can also accept variations of delicious, digg, stumble etc.
If you have older, real accts with a lot of followers I will pay more.
If you have 100 friends willing to help you, you have $50!
It's possible you get work on a daily basis, so you can make $1500/month!