Now that you've signed up for the Do Not Call Registry to save yourself from telemarketers, have you joined the Do Not E-mail Registry to get rid of unwanted e-mails?

No? Good, because it's a fake.

You may have heard that the Federal Trade Commission is setting up a Do Not Spam Registry. While they are looking into the possibility, no such database exists yet. That didn't stop some unscrupulous spammers from trying to get people to sign up at their site "unsub.us."

"The Web site at 'unsub.us' mimics the language, look, and navigation of the Web site for the National Do Not Call Registry, a legitimate free service of the federal government. The unsub.us site is not run or authorized by the FTC," warned an alert sent out by the FTC.

The FTC is investigating the site to discover if it was part of an Internet scam to collect e-mail addresses to sell to spammers -- or worse, a site designed to collect personal information in order to commit identity theft.

While unsub.us has been shut down, a clever spammer may set up a new site to run the same scam. No matter what the site address is, do not fall for any scam that offers to put you on a Do Not E-mail Registry.