LOL, OMG, the OED, and Literary Theory

I thought I was absolutely on to something when I tried to link the Oxford English Dictionary's adding of LOL and OMG to their new definitions this year. At first I thought of structualism: Saussure's synchronic method (focusing on the language at that particular time). He claims that language has its own structure and rules that a speaker identifies as meaningful.

Structuralists believe that both social and cultural communication are governed by codes, signs, and rules (language), and that meaning is found in the system, and not the practice. Studying around the act of interpretation.

But then I read that structuralism studies how the device functions, not how it imitates reality or expresses feeling...And then I realized that while I might be on to something with this theory, I might have to fish around too much to create something instantly. LOL! I'll let it simmer on the back burner for now.