How do I enable the sandbox?
Please see Enabling the Sandbox.
What applications and versions are supported?
Please see the complete list here.
How do I delete my add-on?
Due to security concerns, it is not possible to delete an add-on once its GUID has been submitted to AMO. Instead, you can "disable" your add-on which will hide it from searches, display pages, and automatic updates. You can disable your add-on by clicking the Disable button on the Edit Add-on page. You can go back at any time and re-enable your add-on from the same page.
Why aren't add-on updates sent out for sandbox'ed add-ons?
Due to security concerns. Add-ons in the sandbox are unmoderated. If automatic updates were enabled, then this could be used for malicious purposes. Going "public" forces a review by an editor and lessens the chance of a rogue add-on doing damage thru automatic updating.
Where can I find new themes for Firefox?
If I disable an add-on in Firefox, will that remove it from my browser?
I see several add-ons which provide the same capabilities. How do I decide which one is best?
When I try to install an add-on, the dialog box says "Author not verified". Is there a problem with the add-on?
I see a great add-on but it says that it's only compatible with Firefox 2.x. Can I still install it in Firefox 3.x?
How do I backup all of the add-ons and themes that I've installed?
I installed a new theme but would like to revert back to the Firefox default theme. How do I do that?
If I have an issue with an add-on, should I contact Mozilla?
What checks are in place to make sure that add-ons are stable and safe to use?
I want to contact an add-on author but he won't reply?
I've upgraded to Firefox 3.x but my add-on no longer works? Why is that?
I've added an add-on and now Firefox is acting funny? What do I do?
I want to remove an add-on but I don't know where or how to do it?
What is Firefox's Safe Mode feature?
What are experimental add-ons?
Can I submit requests for new add-ons?
I'm looking for an add-on developer to help me on a project. Is there a place I can post a request?