As far as I am concerned, I agree with David Crystal as he says that the written language has gained more expressivity with the internet. Internet is nowadays the most important media because it is growing up every day. Everyone is able to whatch videos, to chat with friends and also to make a blog (like we have done). Internet gives us the oportunity to take part actively in media, so, we can consider that we also are who have changed the language used in the internet. For example, when we speak face to face, we don’t have problems to express our feelings because we use the corporal language too. However, when we are in front of our computer, we cannot see the other one we are talking to, so we need another kind of communication: we need another laguage. This is internet language, which lets us show other people our feelings even if we do it writting.
This is only an example, but the language has not changed only in the internet. Media is a communication way, and the language is created by the communication, so when a way of communicating changes, it’s easy to see that language is going to change too. So, as a conclusion, in my view all the media changes more or less the language it was used before.