Some good points towards using the Captcha, but I'm still not convinced that "there's no excuse not to know common homonyms and misspellings". As far as using

Some good points towards using the Captcha, but I'm still not convinced that "there's no excuse not to know common homonyms and misspellings". As far as using common homonyms and misspellings as predictors of "job performance, health, and various other life outcomes", well, I'm not quite sure that's reasonable. For example, xd's comment below: http://news.ycombinator.com/item?id=2868142 http://news.ycombinator.com/item?id=2868142 has an error in it "Too many people will spill there emotions" but I don't think it's reasonable to predict too much based on that. There's several reasons these errors are common, not just inability or indolence. There's often a slip between mind and the keyboard - I know I often simply type the wrong thing even when I know full well what the correct thing is. Muscle memory or something. Edit: 'their "doing it wrong"'. Ah yes, very good :)