No surprise that today's papers are full of stories about Alan Duncan's gaffe.
And Paul Goodman - a colleague of Mr Duncan who will escape Westminster when he stands down at the next election - has written an interesting warning for candidates hoping to become MPs.
As we saw in the US last year, with more people carrying phones with cameras and with more of us reading and writing blogs and using instant communication, it is increasingly hard for politicians to have moments when they are genuinely "off-duty".
Recordings of candidates who believe they are off-duty can be very damaging: remember Obama's "God and guns" remark, made when he thought he was talking only to a private audience?
But is this development a good or a bad thing? Is Mr Goodman right when he suggests that politicians, like everyone else, need to be able to "let off steam"?
Or should levels of scrutiny be so intense that every word that comes out of their mouths is beyond reproach?
We understand that David Cameron is pretty peeved by what Mr Duncan said - but, given the shadow leader's speedy apology yesterday, will Mr Cameron go any further?
I wonder if you can really be sacked for saying aloud what many of your colleagues might think.