The site name is Idle-Empire you can earn points by afk in TF2, surveys, watching videos, and promotions. You can withdraw points to bitskins, opskins, paypal, and more.
My promotion link is: https://www.idle-empire.com/r/0l3wam
Click here for 500 coins.
Promotion(refferal) system is so good.
You invite anyone with promote link you get 50coins.
People invited from you get 500coins by sign up.