How to remove your Gust.com account
No mention of full account removal, however, if you send an email to email@example.com and request full removal of your account, they are willing to do so. Please mail them from the email address you used to register your account with.
Helpful Trick: Removing online data
Helpful Trick: Remove third-party logins
If you signed up for Gust.com using a third-party login such as Facebook or Twitter, you probably want to revoke all access from Gust.com. Click here to find out how.