For the final 11 days of 2011, we’re going to take a look at some of the top mistakes made this year in our industry… including social media, marketing, branding, graphic design, web design and SEO.

#10-United Airlines has no comprehension of sarcasm

Earlier this year United Airlines failed to understand clear sarcasm in a tweet from a user who had been complaining about her flight being canceled. (We’re just going to assume they didn’t understand and weren’t trying to be obnoxious.)