Here is an excerpt:
Scammers in the United States comprised 66 percent of complaints referred to authorities, followed by Britain at 11 percent, Nigeria 7.5 percent, Canada 3 percent and China 1.6 percent. Within the United States, the bulk originated in California (16 percent), followed by New York and Florida.
Fraudulent sales on online auction sites like eBay Inc and classified sites like craigslist.com contributed to a 32 percent rise in the hottest area of online fraud — non-delivery of promised merchandise, the report said.
That area alone made up about 33 percent of all complaints serious enough to be referred to law enforcement.
Other important areas included investment scams such as mini-versions of the $65 billion Ponzi scheme committed by New York financier Bernard Madoff in which money from new investors is used to pay existing investors.