Perhaps I've just missed it, but my problem with twitter is this: Is there a way to send messages to just these 10 people, and not all 100 followers? That's what I need from a social network. I need a public (everyone can see) channel, and I need channels (that I control) that are visible to specific individuals and groups.

My soccer team (in general, some overlap obviously) doesn't need to know about my ballroom dance plans or my BJJ tournament or my date this Saturday. And none of them need to know about my family reunion plans (zero overlap), though I may post some photos to the public channel.

If the adoption in my friend groups had been higher, G+ seemed perfect for this to me. FB with effort, making groups that I invite people to. But I want it to be transparent. I want you to see me, not me(soccer) and me(ballroom). If you happen to be in both, it's the same, not separate spaces.

That seem like natural boundaries to me. That's what the platforms target. I wouldn't want the random people that follow me on twitter knowing the kind of things I post on Facebook.

It doesn't seem weird to me in the least, it's the nature of those two products that points in those directions. Sure Facebook wants you to make everything public, and sure Twitter offers private profiles and some private features like DMs, but in general they naturally gravitate towards the type of usage the GP describes.

I've used Twitter to meet like minded people, however, I think the main distinction is that I don't use Twitter (in general) for interactions with people I met outside of the Twitterverse