Dear Heloise: I’m so grateful that you include hints for all parts of our lives, as all things have become more complicated. Recently, I received some especially vile political propaganda. I noticed that the sender seemed familiar and recognized it from the address lists on frequent e-mails I receive from friends.

Please educate yourselves. When you just must forward an e-mail, check the box in your address book designated “BCC” (for blind carbon copy), and before you hit “send,” delete the previous senders’ information. This keeps your name and address book—and theirs—from being s...

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