Most of the times I go through the web for finding tweaks for Firefox. I found these articles are very interesting and tweaks contained in these articles help me to improve the performance of Firefox.

1. About:config Entries - This is a reference to about:config entries which you can get basic understanding about those entries.
2. Ten Mysteries of about:config - about:config tweaks from Linux Journal.
3. Top Firefox 2 config tweaks - Written by Gina Trapani from lifehacker.com.
4. Firefox about:config Hacks and assorted tips - Some greate performance hacks for Firefox from Tech Yantra.
5. Make Firefox much faster about:config tutorial - Video tutorial from youtube.com and you can find more from related video list.
6. The secrets of about:config - Firefox Hacks from computerworld.
7. Firefox Tweak Guide - 12 page Firefox tweak guide from tweakguides.com.
8. Firefox Tweaks - Firefox tweaks for network connections and plugins.
9. Firefox performance tweaks - Another Firefox performance hacks.
10. Firefox memory tweaks - High usage of memory is some time a problem for Firefox users. This guide will help you to tweak the memory settings.

These guides some times contain same tweaks but I prefer you to read these and choose the best things.

A few days back, I happened to come across a really interesting and useful add-on for Firefox. It downloads videos or other embedded multimedia content from the website, directly to your hard disk, in FLV format. Click here to visit the download page.

Looks like the download-every-time-you-wanna-watch days are going to be long and past. But will they come out with some way to block add-ons like these? I don’t have the slightest idea..

Btw, if you have the Greasemonkey add-on installed, you can also check these two scripts. They add a ‘download this video’ link to any YouTube or Google Video video page.

Script 1 - For YouTube videos

Script 2 - For Google Video videos

As you would know, Greasemonkey scripts sure are much more convenient than any other add-on.