Just found a new blog called Clogger - really well written, its author takes a look at business bloggers from a PR stance. One Robert Scoble has already commented when Clogger incurred Scoble's wrath over calling him a PR bunny!
And another good one from Clogger:
I'm sorry, bloggers, but you're sitting at the big boys' table now. If you're in the fortunate position of having built up a large reader base through your hard work and sweat, all credit to you. You have an audience - this is a powerful thing. But with great power comes great responsibility.