Detects and shows commenters web browser/operating system (used in the comment loop)
Describe an arbitrary user agent string (for general use)
Can show web browser/operating system icons
If the user is "cookied" - a.k.a blog admin visiting the blog - , it also displays an asterisk titled with the full user agent string(just mouse hover the asterisk to see the string). Regular visitors can't see this feature.
All mainstream browsers and SOs are detected, blogging softwares(trackbacks/pingbacks), text based browsers, antiquated browsers, cell phones and pdas
It can be "automagically" added in your theme if you do not want/like to edit templates