That's a good question, @techguyjoe. On my old blog, i used to review artwork by various painters. I'd post pictures of their paintings on my site with links and credits to their website. Technically, it is in violation of copyright. Didn't feel so bad as i wasn't making a cent off of them and was doing free promotional work.

Doing the same on Steemit is a little different because of the monetary reward so i stay clear of it.