Ajax isn't a technology. It's really several technologies, each flourishing in its own right, coming together in powerful new ways.

At Adaptive Path, we've been doing our own work with Ajax over the last several months, and we're realizing we've only scratched the surface of the rich interaction and responsiveness that Ajax applications can provide.

Content is often the reason users come to your site.

Problems with visual design can turn users off so quickly that they never discover all the smart choices you made with navigation or interaction design.

Giving something your time isn't the same as giving it your attention.

The more everybody knows about all aspects of the problems we face, the better off all of us will be. Less time spent explaining things means more time for coming up with creative solutions.

But despite the universality of URLs, we often forget that they're not just a handy way to address network resources. They're also valuable communication tools.