Scammers can be really stupid. Take these guys who are running a non-existent UK National Lottery / FIFA Brazil 2014 World Cup scam..
The scam is purportedly from a "Mrs Hilda Adams" references a fake company:
Equity Investment Limited
132 Blackburn Road
Some key parts of the email are:
Ticket number: 034-1416-4612750
But search for "Equity Investment Limited" on just about any search engine and the first hit you will get is an article I wrote way back in 2003 about a lottery scam using a company of exactly the same name.
The email address is a throwaway free email account, the telephone number looks like it is British but in fact it a forwarding number provided by Cloud9 which could potentially forward calls to anywhere in the world. This type of "follow me anywhere" number is often abused by scammers. As for the address.. well, it's unlikely that whoever lives at that address is anything to do with this at all.
Luckily, most people who run lottery scams have the intelligence of a box of rocks. And it seems that quite a few of their victims have heard of a thing called a search engine..