Let’s hear it for Yahoo! Once again, Yahoo! has proven themselves worthy in my eyes as they announce their desire to work with the Firefox browser instead of against it. Obviously seeing the advantages of embracing this browser, Yahoo! is going to be making a number of their users very happy as they will not have to switch back to IE just to use their services.

In February, Yahoo launched a search toolbar for Firefox, but users of the open-source browser were forced to revert back to IE to access some Yahoo features. For example, Yahoo Messenger users still cannot use Firefox to customize their online avatar and have to revert back to IE.

However, a Yahoo representative on Tuesday said the company will not launch any new products or services in the future without ensuring that they work on both IE and Firefox.

“Due to the explosive popularity of the Firefox browser, it has now been added to our suite of browsers to test our products against. All new products that Yahoo develops will be tested against Firefox,” the representative said.

However, Yahoo would not commit to a date when all its current services–including avatar customization–will be available to Firefox users.

“We understand that consumer usage of Firefox has steadily increased, and we are committed to providing an enhanced consumer experience. While we are unable to provide you with an exact date, I can tell you we are actively working to provide Firefox support for avatars,” the representative said.