Firefox’s extensibility is the primary reason why I have stuck with it. The browser extensions I’ve installed do what I want and significantly improve my Internet experience. The folks at Mozilla are playing to that strength with a new browser customization Web site called “Fashion Your Firefox.”

The site simplifies Firefox add-on discovery by having users select from a menu of nine categories that are geared toward various browsing scenarios such as “Shutterbug” for photo aficionados and “Rock Star” for music lovers. Users simply check the box next to add-ons that interest them, and install them as a batch.

For Firefox, add-ons are a good hedge against a reinvigorated Microsoft Internet Explorer and new competition from Google Chome. (I was tempted to switch to Google’s Chrome browser to get a good feel for it, but found myself missing my add-ons.)

Microsoft has revamped its own add-on Web site to coincide with the launch of IE 8, but I do not know anyone that uses IE for its add-ons. Google also supports some add-ons, but like Microsoft, it lacks the depth of choices that Firefox has to offer.

The Mozilla Foundation is wise to showcase its add-ons to differentiate Firefox. In doing so, it also keeps its base of developers happy and firmly in its camp.