Yesterday, I clicked on a link from @craneinsider, who I follow on Twitter, to his blog post about celebrities and people in the fashion industry sending written notes of congratulations to a magazine in celebration of its 10th anniversary. The magazine's slideshow of cards showed many examples where individuals had crossed out their names on their personalized stationery, Peter (aka The Crane Insider) indicated in his post that this was an indication that the note was of the most personal nature.
When I followed up with Peter, it became clear that neither of us (nor Google, for that matter) seemed to have a source for that rule of etiquette. But, clearly, people use the strikethrough on their personal correspondence.
So, I plead to you, dear readers, for assistance, have you heard of this practice? Do you have a source for the rule in etiquette? Both Peter and I are dying to know!