Please send your questions for publication to prudence@slate.com.

Dear Prudence,

I am an American who lives in Wales, and I have a problem with geographically challenged American friends who confuse England (just a part of the whole) and the United Kingdom, and are constantly sending mail addressed to me in Wales, England--instead of Wales, U.K.

Should I make a pest of myself and keep telling my friends that I live in Wales, not England, or should I just shrug it off?

--Adopted Welshman

Dear Ad,

Ah yes, a gray matter issue. But you have come to the right person. A geographically challenged American, that is. (Prudie thinks she was in the bathroom when other people learned these things in grade school.)

In any case, speaking as one who would be on the receiving end of your "pestering," by all means offer the mini-education. Sending mail--and wanting it to arrive--makes your little lesson one with actual value. If, however, you find yourself having to tell the same person more than once, then shrug it off ... and Prudie hopes you will be compassionate.

--Prudie, geographically

Dear Prudence,