In "Why Twitter Will Endure,"  New York Time's education and media czar, David Carr, writes perhaps the best overall description of Twitter and its overall value to civilization, better than anyone I've read in quite awhile. It's still not going to help your grandma understand Twitter, but it may help any of your friends or family who still scratch their heads and wonder why we're all sitting in front of our Twitter streams, discussing our favorite bagels and dietary supplements.

Carr confirms my previous assertions that only people who use Twitter every day, and understand many aspects of media and technology, are qualified to have any opinion about Twitter that's actually worth reading. Everyone else is just a user, and their views should be relegated to that user feedback site that Twitter still doesn't have.