Recently Internet Explorer 6 passed the grand age of 9, having first been thrust upon an unsuspecting world in 2001.
When it comes to using software, especially in a rapidly changing industry such as the Web, this is the equivalent of wearing flares and a tight shiny polyester shirt with a flower print even when not attending a 70s revival night, or creating a mixtape of Flock Of Seagulls and Human League tracks, despite the availability of Girls Aloud in high quality MP3 or lossless FLAC formats.
Internet Explorer 6 is a case of 2001: A Browser Oddity. Despite this, up to a quarter of your web site visitors may still be using this antiquated technology.