The first and foremost positive change that has happened is the quality of the VoIP calls. There is a constant improvement in the quality of service offered under the category of VoIP. The other advantage associated with the VoIP is that it has become easily available. Now that has lead to an increased amount of broadband Internet connection opted by more and more people.
The 404/Not Found error message is one of the most hated screens on the Internet; it indicates that though you, the browser, were able to communicate with the server, the page you need was not delivered either because it was not found or because the server for some reason was configured to not fulfill the request (which is happening in some countries with pages containing illegal content).