Usages of language are analyzed in ways that are at least partially language independent. In preferred embodiments, portions of a document are hashed, and the resulting hash values are compared with each other and with those of other documents in real-time. Analyses can be used to gauge conformity of a document to one or more standards utilizing a hash triplet consisting of a hash for each document word and two involving the word and its preceding and following words, to provide suggestions to the author, and to filter email.