rogerd - 11:30 pm on Jul 5, 2007 (gmt 0)

I think common sense will suffice in most cases. A recommendation to counter a documentary film (however biased) is probably something not best put forward in a public blog. Either private communications or a general "Using AdWords to Counteract Negative PR" would have been fine. "Using AdWords to Strike Back at Michael Moore" (no, that's not the actual post title) is bound to be controversial.

When a corporate blogger isn't sure, then a quick consult with the boss or with legal should clear things up.

I think it's possible to be frank, unfiltered, and open, yet still avoid major PR miscues.