Whether you care for it or not, the meaning is valid, and the usage is recognized by those of more flexible judgement. Prescriptivism is a bad habit, and is usually endemic in people who don't understand common linguistic principles, but who are comforted (and generally empowered) by being able to say "dem's da rules, pal!". Using 'concerted' to modify a singular noun is no more ridiculous than using 'majority' as a synonym for 'most' (as in, 'the majority of people don't care about this discussion'), but the usage has become common and is generally acccpeted. Careful writers will avoid these words, but c'mon, it's just a blog...his language is pretty sharp, and sniping at supposed usage errors is a pretty weak way of avoiding the Snob's critiques. But don't worry-- your language is safe! I'm sure that 'the ignorant' have been sufficiently warned, and won't make this error again....


...that guy on the NY'er cover must be a friend of that freak in SF who rides the brakeless freewheel pista. Let's hope that his document tube comes with an airbag.