A class action lawsuit has been filed against Facebook seeking $15 billion in damages, or $10,000 per member, for violating the privacy of its members, according to the complaint.

The action filed in federal district court in California combines 21 cases filed across the United States and alleges the social network violated its members' privacy rights by tracking them even after they logged out of their Facebook accounts.

Facebook's Andrew Noyes, manager of public policy communications told PCWorld in a short statement: "We believe this complaint is without merit and we will fight it vigorously."

The lawsuit was filed as Facebook launched an Initial Public Offering (IPO) of stock expected to raise some $16 billion for the company, which has a market capitalization of some $100 billion.

“This is not just a damages action, but a groundbreaking digital-privacy rights case that could have wide and significant legal and business implications," Bloomberg news was told in an email statement by one of the attorneys in the case, David Straite, a partner with the U.S. branch of Stewarts Law. Stewarts is the largest litigator in the United Kindgom and just opened offices in the United States last month.

According to the lawsuit, Facebook violated the U.S. Wiretap Act by tracking its members movement on the Web through "like" buttons embedded on millions of web pages throughout the Internet.

The law bars “interception and disclosure of wire, oral or electronic communications" and provides fines of $100 a day, up to $10,000, for every day the law is violated. If the maximum fine were imposed on Facebook members could receive $10,000 - which is highly unlikely...