Have your ever wondered where does Facebook earn from, well we users help them earn by clicking on ads on Facebook. Last year Facebook earned a little more than $9 per user. That is quite large if you have more than 900 million active users. You would be surprise to know that a large share of Facebook ad revenue comes from Mobile ads. In 2011, Mobile ads consisted of just 1% of online ads and this number is expected to increase to a huge 80%. So the future is Mobile Money that Facebook is already banking on. Check out this infographic posted on Online MBA to know more.