I'm really interested to see how they'll handle liability. If they want to make a lot of money, I'm going to guess the founders won't be vetting anything before it gets published. However, if they're pushing it on Reddit, writing the checks, selling the stuff to other publishers, I'd find it hard to see a DMCA claim holding up. At that point they're doing a lot more than for their content creators than Youtube or Scribd, making them accomplices in any libel lawsuit that might come up.
Will they go to the wall for one of their writers? Doubtful.
So do they have a new angle on the legal side of things?