I think the only downside to Steemit right now is the lack of a "timeline" or profile page where you can communicate with your audience and network, without the need for a post. This is the advantage that Facebook has. It's not easy to build a following here, especially when your content is quickly buried due to the sheer number of posters.
In any case...
RE: Laughing At The Zuckerberg Empire: Some Interesting Things To Ponder