David Crystal

David Crystal is an authority on the English language. He writes clearly and with common sense on every aspect of English. You can find his blog here - scroll down to "On Insults, or Not" for his comments on a topical news story. Here is another link to his great reference work, The Cambridge Encyclopedia of the English Language. This is a surprisingly readable guide to English right from its origins through to the different varieties of English in the world today. It's an ideal resource for any student of the English language.