Wolfang wrote:No it's not incorrect, and I highly doubt that you are a (competent) librarian if you didn't know that.
You should have done some research first.
I give a good explanation as to why it's incorrect and you think a 'no' followed by an insult is a good enough retort?
How about some evidence to support your claim? You're all in favour of research, why don't you do some yourself? Until you can find proof that humans have two or more brains, using plural when addressing a single person is just not right.
As it happens, I did look into it. After KoE's suggestion that we have a language barrier, I scoured the internet for a good half hour trying to find it in use. It was a marginal success; I only ever found it alongside horrendous spelling and other miscellaneous mistakes.
If you can give a good reason as to why you're right and I'm wrong, I'll hold my hands high and apologise. I won't hold my breath.
Since this is slowly becoming an argument that has nothing to do with the topic, might I suggest we take this to PM's? Your call.
EDIT: I'm an english librarian, and we don't accept colloquialisms in official language. So please excuse me while I defend proper english as competently as I can.