I can't imagine an HR department sharp enough to find, read, and think about your blog posts, yet dull enough to bin your resume because one of them describes some day-to-day error you made.
Its actually pretty easy to meet that criteria, they use 3rd party internet search firms that hand them a little portfolio (often printed.. err) on you with a lot of cruddy summarizations. I honestly think it makes them feel like the internet is just another background check.
