In the late 1990s, a large multi-national technology corporation, hoping to become a major force in online advertising, bought a small start-up in a sector that was believed to be the "next big thing". That corporation was Microsoft and the start-up was Hotmail. Hotmail and Microsoft established web-based email as a must-have application for personal use. The addition of Hotmail to the Microsoft inventory promised to increase the companies online revenues that were being dominated by Yahoo!, Google and AOL amongst a host of others. Read more – ‘Online Social Networks: Everywhere, Yet Nowhere’.
On the Web, a walled garden is an environment that controls the user's access to Web content and services. In effect, the walled garden directs the user's navigation within particular areas, to allow access to a selection of material, or prevent access to other material. Read more – ‘Open Standards: Break Down Those Walls’.