You can make a variety of changes to your own Bananatag account by logging in and clicking on the Account tab. From this tab you can click to...
Settings -> Change notifications, update email address, setup open blocking, and more!
Status & Billing -> Change your subscription, cancel your account, update billing information
Send Direct -> Setup or turn-off Send Direct
Invite Your Friends -> Let someone else know about Bananatag!
If you are interesting in cancelling your account you can do so by changing your Current Status line from Active to Cancel Account. This option can be found by clicking on your email address in the top right corner of your Bananatag dashboard and selecting "Status & Billing".