Christopher Null - Now the Federal Trade Commission is exploring a similar list designed to prevent Internet users from being tracked while they’re on the Web, ECommerce-Guide.com reports.The so-called Do Not Track list is now under investigation, and a report on its feasibility is said to be due in the fall. The idea would be to limit Web users’ trackability through cookies and other mechanisms, thus preventing online marketers from discovering users' browsing and e-shopping habits.The biggest snag: Under current law, the FTC does not have broad powers over Internet commerce and specifically over online advertising. Rather, it operates under a relatively narrow set of rules that define exactly what it can and cannot do. A Do Not Track list may ultimately require an act of Congress to become a reality.The potential list comes from a place of recent and growing frustration with Internet businesses, which have been accused of abusing arcane and complex online privacy policies — not to protect the rights of their users but to outline in legalese how those rights can be bent, twisted and violated. As I reported recently, the courts have already held that online terms of service are not enforceable, and privacy policies may be the next to come under fire.Either way, we’re in for a long haul on this one. Nothing is expected to happen with any potential Do Not Track rules for some time, and industry is sure to resist. Stay tuned for some announcement as the year comes to a close.— Christopher Null is a technology writer for Yahoo! News.