Yes you can make money by facebook. now a days facebook is not only a social media but one can use easily to make money.
Here i am introducing a easiest way to make money by social media like facebook.
You can share any link on facebook profile, popular page and popular group.
You can get affiliate links from amazon, clickbank or any other affiliate program that you like or your own business links.
You can get more idea about affiliate marketing and programs.
You can use url shortners there are many online shortners are available you just have to google to get it.
Now a days Its a big online business of affiliate link sharing and earning.
By this way you can get easy and fruitful traffic. and by the action of traffic you can make money.
And there is no condition no investment it only requires your time and efforts.