Today browsing i found this chrome plugin that lets you mine btc, which its whatever.. i guess.
But the good thing is that if you invite 5 more people on it, maybe in 6 month you are making a huge amount of btc.
I don't know if its an old news or what but i just found it and it looks great.
Join me if you want thru my personal link !
https://getcryptotab.com/93794!