Texting doesn't affect spelling

Here is a link to the article if you would like to check it out
http://www.washingtonpost.com/wp-dyn/content/article/2009/10/19/AR2009101902878.html

Simply put, I don't agree with this article at all. It is based on a study of only 40 students and concludes that texting and instant messaging doesn't affect students spelling. It claims that students know when to use text lingo and spelling and when to use proper English language and spelling. Obviously, though if students are constantly communicating through texting, talking, and instant messaging, they aren't seeing the written English language very much and will have trouble with spelling. It is proven that a lot of us are visual learners and without seeing the language written correctly very often, we are bound to become worse at spelling some words.