the problem with text messaging in association  with grammar is the lack of depth in student's writing. Supporting details and descriptive phrases are  key to well-written responses, essays, and formal papers. Since a sentence can be stated in one  sentence that may contain only five words and "get the job done" in a text message, students are  tending to think that shortened answers will also "get the job done" in the classroom. For many  courses and especially English, shortened answers and choppy sentences will certainly not suffice  (Mapes, 2009)

(Maples, 2009) is the correct citation. http://www.connecttristates.com/news/news_story.aspx?id=274742#.U3QHyK1dW1Y