Mark Huffman ConsumerAffairs.Com released a list : Top 10 Scams of 2006.
1. Fake Lottery Scam
2. Phishing-Vishing Scams
3. Phony Job Scam
4. Negative Option Scams
5. Nigerian 419 Scams
6. Pump & Dump Scam
7. Bogus Fuel Saving Devices
8. Grandparents Scam
9. Oprah Ticket Scam
10. craigslist Scam

http://www.consumeraffairs.com/news04/2006/12/top_ten_scams.html