Hey, so, I'm one of the co-authors of OStatus. First, welcome to the community of people working on this important problem. I highly recommend you join this gr

Hey, so, I'm one of the co-authors of OStatus. First, welcome to the community of people working on this important problem. I highly recommend you join this group to stay informed about what's going on elsewhere: http://www.w3.org/community/fedsocweb/ http://www.w3.org/community/fedsocweb/ It's an "issue" group, not dedicated to any one protocol, service, or software package. Please, make sure you're a part of it! A couple of notes: 1. We're working on including private messages in PubSubHubbub 0.4 and thus into the next version of OStatus. Understood that it's a big deal. 2. You're right, there's no standard API. ActivityPub is an attempt at that; see here: http://www.w3.org/community/activitypub/ http://www.w3.org/community/activitypub/ Thanks for considering. Let's make sure we interoperate!