Javascript console in FF's sidebar: too cool when trying to achieve something in Javascript and you have to check every 2 seconds what's going wrong. And God knows things go wrong in Javascript :P (via WLTC)
Google Serving Browser Based Content ?
Different browser : different results. WTF ?
Now that's interesting, a simple CSS file to hide ads and banners. Of course, requires a bit of CSS3 support (selectors) and the ability of using a custom CSS that applies to every site. In other words, requires Firefox.
Skinning Gmail with a Custom Stylesheet: modify Gmail's look & feel with a custom .css and scheme you like. This is a nice example of per-domain stylesheet ability of Mozilla and Firefox.
CSS3 Tests: Compatibility Tables : Compatibility information on CSS3 Selectors for current browsers. Of course MSIE is completely late on this <8-) (via Max's)
Web Developer Extension: Handy extension for Firefox : a set of useful tools when designing web pages. All in one menu instead of 50 bookmarklets.
Get Firefox ! Or don’t.
Quite bored with all the websites asking you to switch to Firefox. Let me chose damnit.