O2 is one of the UK's leading mobile networks, and has been since its rebranding from BTCellnet in 2001. This site contains information about a lot of the services and mobile devices available at the time. O2 - "See what you can do"

The web search feature to find programs that can open unsupported file types on XP is back in its original 2001 design (dead since 2006), a huge amount of file types are recognised by the service and contain links to a number of software sites