How to delete a Digg account?
The description of the service:
Digg is a news aggregator with a curated front page, aiming to select stories specifically for the Internet audience such as science, trending political issues, and viral Internet issues. It formerly had been a popular social news website, allowing people to vote web content up or down, called digging and burying, respectively.
Contact Digg’s customer support and request for your account to be closed.