It seems that the global economic downturn has even made paupers out of billionaires. Here is a top list, compiled by Forbes, of billionaire who lost billions of dollars from their net worth over the last year.

• Anil Ambani (was worth: $42 billion/current worth: $12 billion)
• Oleg Deripaska ($28 billion/$10 billion)
• Bjorgflur Gudmundsson ($1.1 billion/$0)
• Luis Portillo ($1.2 billion/$15 million)
• David Ross ($1.4 billion/$150 million)
• Tulsi Tanti ($3 billion/$500 million)
• Wong Kwong Yu ($3.5 billion/$2.5 billion)
• Larry Yung ($3 billion/$750 million)
• Konstantin Zhevago ($3.4 billion/$350 million)

You can read the full story on Billionaire Blowups of 2008.