I was recently told of a scam here in Texas. There is a transportation company booking broker freight, then reposting as there freight at higher rate with no intentions of paying the new carrier. The new carrier did over $100,000.00 worth of business with the broker. The broker company is currently being investigated by federal, state and local law enforcement.
So when booking a load with a broker due your homework and see if they are a reputable company. Check their ratings on safersys.org and BBB.