I’ve said this in the past (a little here, a bit more here), but I generally think the best approach to web success is lots of little ideas which you see through. In my mind this fits perfectly with both the ideas that most stuff is random and that everything is relative.
Anyway, Kevin Allison has a nice piece in the FT about businesses using this approach as their primary strategy. He explains, “some entrepreneurs factor the unexpected into their business models, eschewing business plans that rely on a single big idea. Instead, they set up companies in which small teams of engineers work on several ideas simultaneously. The hope is that one or two will take off – a ‘shotgun’ rather than a ‘sniper’ strategy.