um... leanpub.com has been around for several years now. and they only introduced the github integration this month. so you can't really say that is "_exactl

um... leanpub.com has been around for several years now. and they only introduced the github integration this month. so you can't really say that is "_exactly_ what it's about." or even that it has yet had much of a shakeout in testing. -bowerbird