1. jQuery plugin: Validation
This article demonstrates how the jQuery Validation plugin works. It shows a few aspects that you should know about when using this plugin.
2. Hacking Web 2.0 Applications with Firefox
The article might be helpful not only for hackers, but for developers as well. It demonstrate how to simulate a browser event automation with the Chickenfoot plugin and debug applications from a security standpoint, using the Firebug debugger
