I worked for a couple of years investigating frauds and I was blown away at the lack of law enforcement activity. There's a whole community of people who work together to steal huge amounts of money from anyone who will give it up.

These people are amongst the biggest spenders on lawyers, as they try to keep their names off websites through the use of libel laws.

For example, these guys: http://www.petraenergy.net/

It's a 'company' operated by Paul Simms, a disbarred solicitor in the UK, and Srinivasan Solaraj, an Indian national. Both were declared bankrupt in 2007 after a non-existent deal blew up in their faces. The business has no assets, everything on the site is puff. They chose the name because it's similar to a legitimate Malaysian company. Simms' old legal firm was called Citilegal, until Citibank noticed it was a little too similar for comfort.

Generally, law enforcement are happy to leave frauds targeting the wealthy to civil courts. The police simply aren't interested.