How has the Internet affected communications since the time it has been accepted around the world?

Well you obviously can talk to more people and reach out to more people than one previously could. Would I have been able to answer your question if the internet didn't exist? Probably not, that's how internet has affect communications.

Internet Communications is shaping the way in which human beings communicate. This is fundamentally different from communication practice pre-internet.

For more information on this see, http://www.internetaffected.com/