I've noticed that whenever this blog gets a plug from Russell Davies I get a huge spike in hits (so thanks Russell).
Maybe there's a bit of an opportunity for him here: a nice little side line in paid for blog comments. Which also suggests some more terms for the blogging lexicon: is that 'blogvertising', or maybe 'blogvertorial'?
And there might even be an IPA Advertising Effectiveness Awards paper in it as well somewhere!! There's always a big short term blip, but also a definite step change in on-going readers as well.