Earlier quoted context omitted.
> It was being used just as a republishing tool So, like Google Plus. Except that an "open" publishing tool is at least more useful than an entirely proprietary one! Let's face it, Google dropped the ball here.
No. Google Plus never had an API for incoming content. Buzz allowed one-click connection to Twitter. Great idea, but people would use it to publish straight from Twitter, and wouldn't engage on the Buzz platform. This was a terrible experience - you'd miss the conversational aspect of Twitter, and be ignored if you tried to have conversations on Buzz. Google dropped the ball here. Maybe, but it isn't clear to me what…
This comes with the territory of having a fledging social network - it's not "terrible" if it's good enough for users. You grow from there by encouraging some niche communities to congregate using your system, that's how true "engagement" can start. Even Facebook itself grew from a very small community, namely students at a particular college, then college students more generally.