I've decided I don't want to use Twitter any more - how can I delete my account?
To deactivate your account:
- Log in to Twitter
- Go to Settings
- Click Deactivate my account at the bottom of the page
- Verify that you really want to do it and voila, it's done.
More information in Twitter's Help pages
Click this link: deactivate your Twitter account.
On the Twitter website there is a link to deactivate your account.
You can find it here: http://twitter.com/settings/accounts/confirm_delete
You can find the instructions in Twitter support site.