Did you know Google's JavaScript Loader API can serve up popular javascript frameworks such as jQuery, and Prototype using their content distribution network? It works like this:

<script src="http://www.google.

Mozilla recently announced a new project called Geode - which allows web sites to request your location using JavaScript. I assume this will be built into a future release of Firefox someday, but for now it's a Plugin.

The amount of data out there via API's is increadible these days. For instance you can take an address, and get the latitude and longitude using Google's GeoCoding API.

I am using this API along with some others to build a pretty some interesting stuff (more on that when its public).