RE: Travel writing contest! Win 100 STEEM [Support travelfeed.io]

Does the Travel Feed app tax users when they post? I'm guessing, maybe all apps of Steem do in a way, but may be a small number which I guess is ok. I guess some people would not want to call it a tax. I look at things differently. I understand how Steem works with the pool and the upvotes and everything, basically. I guess I'm trying to compare the Travel Feed app with Busy and Steemit and Dtube and other apps of Steem.