Dear FB, Twitter - We want narrowcasting, not just broadcasting!

Ok, I copied the title from another person's blog, Bladam. This guy makes a good point.

How many of you all have wanted to limit who reads what on your Twitter, blog, Facebook etc...account? No, not you guys! I write my blog as a public stream of conciousness that I allow you all to choose to read or not as you will.

Ok, as Adam pointed out, it's not to exclude people but to write about something that is only interesting to a subset of your readers/friends/family. Wouldn't it be nice to be able to set up groups? One for family, one for close friends, one for classmates/workmates, etc...

It's nice to see that there are others who feel the same way.

What do you think about this?