I think internet is the world's greatest invention so I will tell you what is the manning of "internet" .Internet is a global system of interconnected computer networks that use the standard Internet Protocol Suite to serve billions of users worldwide. It is a network of networks that consists of millions of private, public, academic, business, and government networks, of local to global scope, that are linked by a broad array of electronic and optical networking technologies.because we can search many knowledge or everything we need in the internet and almost do the important things in the internet if we are not free or busy such as the business about banking,shopping online,checking things in the online post office etc.Moreover,you can contact other people who far away from by chat on MSN or Skype.And the famous things that we usually do on the internet are chat facebook,hi5,listen radio online,watching VDO on youtube , dowload the songs or sounds for education etc.I believe the people like us cannot live without the internet because it is the biggest and the most important source to searching information for education.