Term: netizen

A netizen is simply someone who is online in one form or another.

It’s a play on the word “denizen” – “an inhabitant of a particular place”, with “net” implying that the particular place being inhabited is the network, or internet.

It might also be considered a play on the word “citizen”, once again implying that a person is a “citizen” or resident of the internet, even though there’s no such formal concept as internet citizenship.