I worked this summer as an intern at Conformal Systems where we developed a more sophisticated version of this, essentially a simulator [1] where random transactions between wallets can happen. The main reason for this was to stress-test btcd [2], the full-node bitcoin client that is developed by Conformal. Overall it was a great experience working with Go and bitcoin.
Interesting. This is a tangent, but how does Conformal make money? Are they for hire contractors? They seem to be doing a lot of open source work that doesn't appear to pay anything right now and they also appear to be a small team.
While perusing the Conformal homepage[1] it seems their main commercial offering is Cyphertite[2], which they bill as a cross-platform "scalable high security solution for online backups" complete with paid data plans (similar to tarsnap).
[1] https://github.com/conformal/btcsim
[2] https://github.com/conformal/btcd