Conversation

On the radio, they're doing one of those features where they ask schoolkids random questions and get cute answers.

Tellingly, none of the children seemed to know what Twitter was. "Is it like a wi-fi?" "It's like eBay but an app." "You can buy stuff on it."

If I owned Twitter shares, I'd sell them on the strength of that. If the next generation of users aren't aware/interested in your brand, you're toast.