Blog like a shotgun or machine gun?

I've recently been musing over whether 'tis better to blog like a shotgun (occasionally but in depth), or like a machine gun (short frequent updates)?

The problem with doing a machine-gun like approach is that the posts would get even more irrelevant, to the point where I'd blog about observing that over Christmas, whilst driving through Bedfordshire, I managed to flick through the various radio stations to find Take that's Rule The World being played five times in fifteen minutes. It's a great song - and the first time around, I was bellowing out the lyrics with wanton abandon - but even my voice couldn't sustain doing that for fifteen minutes.

So, shotgun or machine gun?