Apropos of a situation not worth describing in detail

The Moving Finger writes: and, having writ,
Moves on: nor all thy Piety nor Wit
Shall lure it back to cancel half a Line,
Nor all thy Tears wash out a Word of it.
-- The Rubáiyát of Omar Khayyám

Apparently the desire -- and inability -- to unsay that which has been publicly said is not unique to the Internet age.