There are 2 options you can do, the first is simple.

Since OohYa Chat is free you can simply delete your information and walk away, the only thing that would be left is your username and a blank profile

The 2nd thing you can do is shoot us an email through the "contact us" link at the top of the page and request to have your profile deleted.

* NOTE: In order for us to delete your profile you must send the request from the email address you used to register. This is required to prevent people from having other people's profiles deleted.