One thing nobody ever seems to be aware of in these "The Internet is killing our language, oh noes!" articles is code-switching. Everybody does it to some extent; I certainly write (and speak, for that matter) differently in a formal context than I do in a casual one. But somehow whenever young people are doing something different with language, they are never going to be able to understand that there are times when you need a different language structure -- something that native speakers of any language pick up as they are learning to talk.