Bounties are very popular this days, if you have a lot of friends and followers you can earn a lot of tokens on twitter and facebook, social media bounty campaigns. I'm participating in BitDice ICO bounty campaign, they have just Twitter campaign and I will see how its going to be, this is my first bounty.
There is some Twitter campaigns that pays directly with bitcoins, but those campaigns are full, and I never saw an empty space. I think this is a good way to earn some tokens and later exchange it to bitcoins if you wish, but some tokes are worth to hold for some time and you can earn more from that. Anyway I still don't know much, I will see how its going to be for couple months and I will share my experience here.