Yesterday's Joy of Tech sounds familiar.

I wrote about this in October. In item #2: "I'm getting to know someone new and I can tell she's going to be a good friend. So after our meeting a couple of weeks ago, the question is -- how are we going to communicate. I see her on Facebook. But that isn't my preferred way to communicate, for a variety of reasons. Only after a few days of negotiating, in a total fog, we decide to use email. It seems that could have happened much more quickly."

Communication is getting more difficult. Every time we invent a new variant of email, IM, Flickr, Twitter, Facebook, Instagram, Skype, etc -- we're never going to stop inventing them -- the problem gets worse. At some point this is going to be bad for business. Maybe it already has.

It seems obvious that at some point there will be a way to cross boundaries between silos more easily. Maybe we'll have personal silos?