I think your answer needs to refer to the nature of text messaging and how it is representative of society today and the way that we communicate and relate to each other as humans. Think about texts and compare them perhaps to more traditional forms of communication. We can communicate by text instantly no matter where we are. Often text messages are very short and are not very profound. We use abbreviations and slang instead of "proper" English. Compare this to old fashioned letter writing and this should give you some ideas. Good luck!