I don't know the answer to that.   I care about stuff beyond our business, I have to assume any Company Blogger also has a bigger view and opinion about a lot of stuff beyond worrying about toeing the line on Blogging Best Practices.  

Part of the goal is to humanize your organization.   Humans have opinions.   With business blogging they also have a pulpit.   I think used responsibly and and with blog authoring software that at least allows some review that an occasional slip into Political or Social corporate blogging is probably a good thing. 

What do you think?