Not a bad article, here, though it's not watertight -- no mention of creative emoticons of the type used in the headline, for instance -- and could do with a clearer model of language functions: it tantalisingly refers to 'interpersonal' communication, but this is just an empty premodifier, I think -- rather than, accurately, noting that most of the forms mentioned really do focus on managing the tenor of Internet discourse, showing feelings and managing human speech roles in the absence of tone, expression and gesture.
