Teletext of teletext from the late 1990s and many broadcasters have ceased broadcast of teletext—CNN in 2006 and the BBC in 2012. In the UK the decline of teletext has been hastened by the introduction of digital television, though an aspect of teletext continues in closed captioning. In other countries the system is still widely used on standard-definition DVB broadcasts. A number of teletext services have been syndicated to web viewers, which mimic the look and feel of broadcast teletext. RSS feeds of news and information from the BBC are presented in Ceefax format in the web viewer at PagesFromCeefax.net. In
Teletext economic Teletext system with 1971 technology. However, as low cost was essential to the project's long term success, this obstacle had to be overcome. Meanwhile, the General Post Office (GPO), whose telecommunications division later became British Telecom, had been researching a similar concept since the late 1960s, known as Viewdata. Unlike Teledata which was a one-way service carried in the existing TV signal, Viewdata was a two-way system using telephones. Since the Post Office owned the telephones, this was considered to be an excellent way to drive more customers to use the phones. In 1972 the BBC demonstrated their system,