ATO is always on the lookout for new members, but unfortunately, lately we have had lots of people joining with wrong ideas about ATO. Before you continue, therefore please do make sure that you know what ATO is. For a good description, see the description of the organization page, but briefly, you must...
Also, ATO is a non-profit organization, you won't become rich just by joining!
Well, are you still interested?
For joining you can send an email to the Language Adminstrator of the respective language.
The format is ato-admin-xx, where you have to replace the xx with the correct language code.
Append the at sign and the vapor.com domain. Fake example: ato-admin-xx@vapor.com
You can look up the correct language code here: Internet Country Codes
You can also have a look at the Member List.
When your language is currently unavailable, you can send an email to the webmaster.