From its early days, the World Wide Web space has demonstrated strong agglomeration trends with a very small number of web sites capturing the larger part of the Internet population. At a first glance, agglomeration over the virtual space sounds as a paradox. Web sites are numerous and highly...

The article is an extensive review of the literature covering the history of telecommunications, primarily the telephone and telegraph. Much of the history itself is discussed in the process, including the politics of inventions, monopolies and anti-trust pressures, and industry interaction with...

In the primary context of the USA, the authors discuss technological possibilities compatible with present equipment, which offer some limited improvements in audio broadcasting. They then analyse more radical possibilities which may greatly increase the number of audio delivery channels....