Brands are promises. To be strong, those promises have to be lived and authentic.

And brands are judged by the company they keep - think Disney (& Coca Cola & HP), think McDonalds (& Dreamworks), think WWF (& BSkyB), think the 2012 Olympics (& Visa), even think Accenture & Tiger Woods. These associations can be powerful metaphors until there is a disconnect with your target audience's values. And that's what's happened here.

Part of News of the World's brand promise has been as the people's champion - the nation's newspaper fighting 'little people's' battles against the large, rich and powerful. Now they've turned against the ordinary people - soldiers' widows, parents of murdered children - and look more like the cynical corrupt elite they claim they target. Their brand promise is broken. If but on that basis, News of the World has become 'damaged goods' and would struggle to survive this.

Legal issues and ethics aside, which the full and proper investigation should confirm or otherwise, the sense of betrayal that such a significant and trusted 'people's newspaper' would encourage, allow or turn a blind eye to abusing the vulnerable is staggering. People will remember that - those in Liverpool are still boycotting The Sun after its Hillsborough coverage.
For major advertisers, to do nothing, in terms of changing allegiances or stopping the association, indicates tacit approval and acceptance - and potentially tarnishing their own reputation as uncaring and socially irresponsible.

That is why the likes of Sainsbury's, NPower, Boots, O2 and even the Royal British Legion would not wish to be connected with the distaste that the hacking scandal has provoked among the general public, many of whom swell News of the World's significant readership. Keeping their own reputation intact by being true to their and their customers' core values matters more to them than the effectiveness of advertising through what was once the largest circulation newspaper in the country.

This is a legal matter, but it's also emotional, commercial and political. More has yet to come out and other media titles won't let this die.

Such as today's Economist piece on 'Streets of Shame':