Somebody in the comments of the article brought up a good point. What happens when the site gets shut down? As apparently is the case according to the comment author.

I know it's a trope, a huge joke and everything, but this seems like a perfect place to leave notes on the blockchain. It's something that can't be "cleaned" outside of the darknet, it's permanent, and supposedly impossible to forge a private key to manipulate one party's records. It would make it possible for customers to look back for the records of that wallet, or some tagged transactions to see a record of interactions to give credence to the reputation of that user.

It's a neat idea, removing enough anonymity in a world of the anonymous to establish trust, but not enough to establish a hard identity in order to carry reputation across the *net.