When submitting a username...

To submit a username, click on the relevant section (playstation usernames, or xbox live gamertags) then create a new topic to submit your username.

You can put in the descriptions of how someone can add you online, for example that they must tell you on here first before adding you otherwise you will not accept.

Do not spam your username on other people's topics, these posts will be deleted, make sure it is a seperate topic for each username, people can ask for your permission to add you on that topic. This way of submitting usernames makes it a lot easier to monitor who wants to add you online, and you can control who adds you.