I got this information from a friend it list a of popular internet scams many of them involves emails, although we know not trust such scams but some people still get caught up with them. Be careful with your email.Below is this list.

1) The Nigerian scam, also known as 419
2) Advanced fees paid for a guaranteed loan or credit card
3) Lottery scams
4) Phishing emails and phony web pages
5) Items for sale overpayment scam
6) Employment search overpayment scam
7) Disaster relief scams
8) Travel scams
9) “Make Money Fast” chain emails
10) "Turn Your Computer Into a Money-Making Machine!"

I'll try write them in detail when get more info from my source.