Browser mining crypto.
I stumbled on the Bitgoldmine the other night on reddit. And i think i might've struck a gold mine. All you have to do is leave your browser running and you get rewarded BTC. You can also upgrade your mining pools.
I'll keep you updated, but so far i am up $10 in BTC. Leave your browser on and generate the rewards.
https://www.thebitgoldminer.com/?a=377380