Instant Messaging (IM) emerges as a powerful communication tool, not just for teenagers but also in the enterprise. After enjoying the early benefits of the “raw” presence IM provides, we are now beginning to leverage the power of presence in combination with telephony and collaboration tools. Most “information workers” today routinely use a computer and a telephone. Implementing rich presence in the enterprise infrastructure enables people to improve their communication experience by using these two devices in a coherent manner, with fluid interactions between both. This not only delivers more productivity (faster interactions) but also more creativity in the way users manage incompletely formalized business processes or find missing data. Rich presence will become the “dial tone” of the 21st century.