What is an internet language?

People who ‘surf’ the internet use a lot of special symbols and terms. Some are needed for technical reasons. Others are used to make communication faster and more fun!Some commonly used terms are ‘surf’ which means casually looking through different site, and of course ‘www’ which means ‘world wide web’. In internet language short forms are accepted like ‘4’ for ‘for’ or ‘u’ for ‘you’