Firefox collections are groups of related add-ons assembled for easier sharing.  This idea was launched from the Firefox Add-ons site several months ago.  Since some time has passed, I thought it might be interesting to check back in with this online Mozilla feature to see which collections are the most popular out there.
Here are the most popular add-on collections for the Firefox browser:

Windows 7 Theme for Firefox 3.5
32430 subscribers – This collection of add-ons were gathered to [...]

All in all, 2009 was a great year for Firefox.  It grew by leaps and bounds, and continues to be the best alternative browser out there.  Firefox Facts did pretty well in it’s own right too – surpassing the 7,000+ RSS subscriber mark.  So with today being the last day of 2009, let us all sit back and revisit some of the best posts of the year.
Here are 10 of the most read stories, tips, tutorials and reviews I have [...]

Sitting in the left corner of your status bar, until you are ready for it to jump into action Palette Grabber for Firefox, will grab the color scheme for any site on the web you are viewing.
Here is a little more about the extension from the developer:
Palette Grabber is a Firefox extension for web designers. It adds an “Export color palette” command to your Tools menu; selecting this command will extract a color palette for the current page and [...]

The folks over at tlbox, one of my new favorite Web design and development resources released an extension that allows you to get all the goodness from their Web site in a simple extension.
Here is what I had to say about them a few weeks back on the Lunarpages Lunartics Web site:
Don’t you hate it when your looking how to do that one little thing on your Web site, but just can not figure out how to get [...]