Today's Globe has a piece by Roni Noland, on using the thank-you note to help recover from a bad interview.
The thank-you note is super important to us old people. (Not just interviewers! Send one to the auntie who just sent you fifty bucks for books! To the teacher who bailed you out of jail last semester!)
And don't text or Twitter that note. Go to Staples (you're heading there to get your business cards, right?) and check out their new line of business stationery, which has small packs of classy-looking blank note cards for about $10.
Then hand-write that note. It doesn't have to be long, but it should be personal and real. No Eddie Haskell.
After my mother in law died and we were cleaning out her stuff, we found a stash of every thank-you note my daughter had ever sent her. It drove home to me how much those little things matter to people. So make your kids do it, too.