posts during 2008

AMO Add-on Review Status

The AMO editors have been hard at work, reviewing 255 add-on updates and submissions in the 2 weeks before Firefox 3’s launch, and 238 updates/submissions between launch day (Tuesday) and Sunday.

There are currently 228 updates in the queue and 373 new nominated add-ons. There are normally about 10 new add-ons submitted to AMO every day, but since the release there have been 20-40 every day. Similarly, there are normally about 60-70 updates to existing add-ons every day, but since the launch there have been 100 – 150 every day.

Below is a graph of submission and update rates since 2004, hitting a peak of 235 updates on the day after release and 42 new submissions 2 days after release. You can also see a zoomed-in version of the graph. Astute observers will also notice a large increase in submissions in November 2006, when Firefox 2 was released.

Add-on developers who log in to AMO and check their stats dashboard may be very happy to find that their active daily users have increased quite a bit this week (my own add-on reports a 46% increase since last week). I wanted to remind developers how we determine ADU and why it is slightly skewed this week.

By default, Firefox will check an add-on’s updateURL every 24 hours to look for an update. Add-ons that don’t have an updateURL specified default to AMO, which is how we determine how many “active daily users” an add-on has. The number of times an add-on’s GUID was pinged on AMO is approximately how many people were using that add-on that day.

Firefox 3 has been released! Check out all the new features (or see the field guide) and then go download it!

We’re aiming to set a world record with the most software downloads in 24 hours, so if you’re already using a Firefox 3 beta, make sure to download the full version from Keep in mind that if you’re using Firefox 2, you will not automatically be prompted to upgrade to Firefox 3 yet, so you’ll have to download it yourself.

With the release of AMO 3.4.3 tonight, there’s now a way to try out the new Developer Tools that I’ve been blogging about.

From the en-US Developer Tools, click on “Edit Add-on” next to one of your hosted add-ons. At the top of the edit page, you’ll see a box that offers a try-out of the new edit tools.

The following new tools are available:

The tools are accessible on as well, if you don’t want your changes to affect the production database.

If you find any bugs or have any feedback, please file a bug or add it to the wiki.

Mark Finkle, Dave Townsend, and I have been working on the first issue of about:addons, the new monthly newsletter for add-on developers, collectors, enthusiasts, and Ken Kovash. We’ll be highlighting stories about AMO, important changes for developers in the API and platform, community news, and more! Don’t miss the Opposing Viewpoints column of the Opinion section, in which Mark and I battle over what would win in a cage match: extensions versus the team of themes+search plugins+language packs.

The first issue is scheduled to go out this Thursday, but be sure to subscribe via email before then so someone doesn’t spoil the ending for you: Subscribe now!