They must have meant 'Fee' Credit Report
Given the true nature of the site the "R" in "Free" has got to be a typo. If you log on to the site and sign up, you're not going to get away with it cost-free, according to the New York Times. It requires customers to sign up for a credit monitoring service that costs almost $15 per month. Might not be so surprising that the company is owned by Experian, one of the big three credit bureaus.
FreeCreditReport.com will be releasing a new string of ads less focused on the free and more focused on what they do -- things like identity theft, which a credit monitoring service can help flag. Either way, I'll still find the songs from the original commercials stuck in my head without warning.