The Internet as a medium
Linguists have been used to thinking of language in terms of speech and writing ever since the subject began. In due course, signing was added to make it a triad. When these dimensions are defined, great reliance is placed on the notion of medium (or modality, in some studies) – for speech, the phonic medium (air); for writing, the graphic medium (marks on a surface); for signing, the visual medium (hand movement and facial expression). Now we have a fourth dimension of linguistic communication – an electronic or digital medium.