Topher's Interactive Design Blog

Information design is concerned with transforming data into information, making the complex easier to understand and to use. It is a rapidly growing discipline that draws on typography, graphic design, applied linguistics, applied psychology, applied ergonomics, computing, and other fields. It emerged as a response to people's need to understand and use such things as forms, legal documents, computer interfaces and technical information.

Information designers consider the selection, structuring and presentation of the information provider's message in relation to the purposes, skills, experience, preferences and circumstances of the intended users. To do this they need specialist knowledge and skills in graphic communication and typography, the psychology of reading and learning, human-computer interaction, usability research and clear writing, plus an understanding of the potential and limitations of different media.

Again, watch if you can't be bothered to read: