Well, actually no.
It strikes me that many bloggers feel they must Blog Come What May, even if that means that most of their posts run to this format: person A has done something cool; person B has noticed this and written about it; I noticed person B’s blog and now I’m writing about it too.
I’m sure I’m guilty of this too, occasionally; but as ditdotdat said to me today when we were talking about this, you’ve got to add something new.