How can you see some of the Firefox Addons that might not be ready for “prime time” or mass usage yet? Starting a while back, the Mozilla people decided to create a special section for themes and extensions like that. What is the name for this magical place? The Sandbox.
So how do you gain access to this area? It really is not that difficult. Just click on the “Register” link on the Mozilla Addons web site, fill in your information – and you are all set.
Now as a word of warning, some of these themes and extensions have good reason for not being on the public list just yet. If you feel like you want to help out you might try installing one you like, and then give the author feedback about any issues you have or any fixes that might come to mind.