All competitions should be like this

I just won a Snapper card which has been pre-loaded with some amount of money that I can't quite recall.

Entry was via an email link from the e-magazine of a company I do business with. All I had to do was click the link & answer some (forgotten) skill question in the subject field & click send.

A second or two later the message bounced back with an error. A little sniffing around revealed that they'd made a typo in the email recipient's address.

I corrected it & sent it back.

I surmise I was the only one who bothered to rectify the error :)