I thought the system was supposed to provide encryption to known communication, not anonymity? If that's the case, choosing to use an existing identity managem

I thought the system was supposed to provide encryption to known communication, not anonymity? If that's the case, choosing to use an existing identity management system most people are part of is an excellent bootstrapping decision. Identity management is hard, and it's a fair problem to punt on if it's not your focus. Encryption != anonymity. (In fact, it usually does the opposite, because encrypted messages stand out.)