Block IE6 (and older)
#D7CX: I pledge that Block IE6 will have a full Drupal 7 release on the day that Drupal 7 is released.
Prevent [what may be a slick and modern] Drupal-powered website from looking broken in IE6 (and older) and politely request users of these ancient browsers to upgrade.
For more information about the movement:
The module is fully i18n-ed and theme-able. It comes with a very simple "your browser is ancient" response page, which is displayed for IE6 (and older) users. If you want something more creative, please copy block-ie6.tpl.php, from the module folder, to your theme folder and change it as you wish.
Caution: Don't forget to clear cache after the copy, so that theme layer detects the new file.
Other Drupal 6+ modules that also achieve IE6 blocking (though with different approaches):