Application Developers (SDP, IN, 2.0)

Abstract: Web feeds (hereby referred to as 'feed') have always played an important role in providing users content related updates of Websites without having to visit those websites manually. Typical examples of feed usage include users 'subscribing' to the feed of a website (example, CNN.com) and thereby automatically receiving 'news headlines' when the content changes. Recently, there have been significant innovations where feeds from different sources have been combined to produce new services in a 'Web Based Service Creation Environment' model allowing users to create interesting services building on top of 'primitives' that can be represented on the Web. This document describes the motivation for a feed for Presence information, which the authors believe would be useful to create new services using a similar environment described above