One of my friends emailed me a link, asking me to enter my birthday in the form pointed to by the link. I blithely went to said link, filled my name, date of birth and email address; just after clicking on the OK button, it struck me: what a neat way to harvest email addresses and other important[*] information! And I might have fallen for this like a complete jackass. There is a chance that the whole thing is genuine, but this is one more instance that shows that even the best us of (yup, that's me :-)) let our guards down sometimes.

[*] considering that your date of birth is often used to validate credit card transactions.