I'm rather paranoid about telemarketers. And junk e-mail. This NY Times article talks about scams directed at the elderly and how easy and lucrative they are.
Two interesting observations. Between pages 3 and 4, I was asked to participate in a reader survey. Likely to get marketing information for a third party. Also, I read an article about culinary school graduates and their mounting debt. The next day, i got 2 e-mails about enrolling in cooking school.
Anyway, if you have elderly family, call them often so they are less likely to fall prey to scam artists who act like their friends.