I have had the same experience as other contributors.
Unsolicited mail sent from Singapore requiring me to sign a claim form for $5,000 for a contest I have never heard of or subscribed to.
The sending party has my name and address through some channel that is open to question about privacy of information. No doubt, the is a catch down the line for anyone who responsds to these types of mass mailings most likely in te form of a request for some kind of payment for shipping services or some such innocuous charge.
Its an obvious rip off that I hope the perpetroator will get his collar felt for mail fraud.