I am falling down the rabbit hole here at the Web 2.0 Expo. It's easy to spend hours wandering the floor, through aisles after aisles filled with "business solutions." A shipping container filled with servers: Why not? Twitter for businesses? Sounds good. I can assure you there is no other place where you will hear the words "scalability," "modular" and "sticky" thrown around with such gleeful abandon.

Which makes stumbling upon a cool-for-the-rest-of-us product or service that much more satisfying.