How to stay anonymous online
news.mit.edu
news.mit.edu
and https://github.com/kwonalbert/riffle (author indicates that security bugs exist)
So every packet has to be sent to every server in the network? That's going to cause some scaling problems.
It's especially curious that they mention file sharing as an application, because if the above is true this would be even less fit for that purpose than Tor. Maybe for low-bandwidth stuff like messaging.
EDIT: From the paper, "However, each Riposte client must submit a message proportional to thesquare root of the size of the whole database (i.e., collection of all clients' data), making it unsuitable for sharing large messages among many clients"
It goes on to describe use cases like microblogging and messaging. So I guess it's just the article author misrepresenting the thing.