In the jargon of social networking, America has been "de-friended".
Days shy of Facebook's stratospherically hyped stock market listing, one of the firm's bright young founders has sparked outrage after deciding to renounce his United States citizenship.
Eduardo Saverin, a 30-year-old entrepreneur who helped Mark Zuckerberg to launch the site from a Harvard dormitory just eight years ago, appears on a list of 1780 once-proud citizens who last year told Uncle Sam they would like to give up their passports. The move, which emerged at the weekend, is widely regarded as a tax dodge.
Saverin's 4 per cent stake in Facebook will put his net worth in the region of US$4 billion ($5.1 billion) when the company floats this week.
Though liable for back taxes, he will be exempt from future demands on his cash pile, including President Barack Obama's mooted levy on high-earners.