It would be beneficial for them and all the surveys that I've filled so far did not ask for CC info. If you do click on a promotion which requires a CC, they will gives tons of free coins but that's a bit risky. I recommend to do the free ones. Also, please check my tutorial article for this video. If you could upvote that one, I'd appreciate it. This post was a mistake :/

https://steemit.com/steem/@cryptofortuna/tutorial-how-to-earn-free-steem-and-steem-dollars-outside-steemit