If you live by gunpowder...
Those of us who inhabit the world of old media have learned the hard way to respect the power of the blogger. Over the past couple of years many an error, example of hypocrisy or attempted cover-up has been searingly exposed by the bloggers, and a few careers sunk.
This week, however, we learned that when it comes to making and breaking reputations there's life in the old media dog yet.
We'd asked the fearless political blogger Guido Fawkes to make a film for Newsnight on what he sees as the failings of mainstream political reporting.
It was a thought-provoking piece (watch it here) and as soon as we saw it we decided we'd like to debate the issues with Guido and a Westminster lobby journalist.
This was no trick, but at that point Guido was in a corner. His film had been an exhortation to programmes like Newsnight aggressively to empty-chair politicians who refuse to debate. While he himself prefers to operate in the shadows he could therefore hardly refuse, and a poll of his site's readers urged him overwhelmingly to appear.
The result, as many of the comments on his site quickly pointed out, was a bit of car crash. Guido's keyboard-orientated pyrotechnics were no match for Michael White of the Guardian's verbal swordsmanship.
But hats off to Guido for entering our world. He'll be back.