Following a semi-topical post on Jeremy Clarkson, which got a lot of hits (at least ten times the usual number) due to being linked from some bigger impact blogs, I did the experiment of 'manufacturing' a blog post from my usual opinions applied to the day's headlines.
It was not such a success as JC, probably because it was about 12 hours 'late' but still got at least three times the usual number of page views.
(BTW: I have since deleted it.)
The lesson: if you want to be a successful high-impact blogger - then take your lead from the mass media, talk about today what everybody else is talking about today.
Don't try to beat 'em: just join 'em.