Like nearly everything else in the world, the internet runs on numbers. The problem is that it is running out of them fast. Since the internet is taking off, there is quickly becoming a shortage of IP addresses. These addresses connect one user to another. With only 4.3 billion of them available, they are running out.
The good news is that there is a new protocol in the works. It is called IPv6 and it will provide a nearly endless amount of addresses that will be available. The system is set to be tested out soon and hopefully everything will go all right.