People know what I mean. language is not static, it is ever changing, and linguistic prescriptivism is unjustified. dictionaries and grammar's convey the rules of language that people already use, they don't prescribe what people 'ought' to say, but when people decide to talk or write differently, if enough people do it, then the dictionaries and grammars are rewritten accordingly. it's not a sin to say you ain't gonna do somethin. you can consider my non-capitalization a micro-dialectical rule depicting informal communication if you wish..