Radio Bandwidth

Radio Bandwidth was first an issue in the early twenty first century, shortly after the introduction of cellular phones. Since then radio waves have become increasingly cluttered with transmissions, and preserving bandwidth has become an ever more problematic issue in order to avoid communication throddling.

The major problem with radio bandwidth is that it is inevitably a finite resource; only so much material can be transmitted at any given time over the channels available, and people continue to exchange more information.

Internets
An internet is the network available within a five light-second ping, which translates roughly to an internet for each of the settled planets and their orbits. Transmissions within an internet aren't powerful enough to interfere with the transmissions of another, so local communication is unrestricted and nearly instantaneous. Between Internets is a different matter.

The Multinet
The Multinet is the word to describe all communication between internets. Transmissions require significant power, contain much data, often interfere with local transmissions, and have delays as the transmissions travel through space. Delays range from less than an hour in the inner solar system to half a day or greater in the outer solar system. The delays in particular make multinet communication a natural bottleneck for communication.