A user agent (or useragent/user-agent) is the browser that you
use to view this site. When a software agent operates in a network
protocol, it often identifies itself, its application type,
operating system, software vendor, or software revision, by
submitting a characteristic identification string to its operating
peer. A website needs to know who you are, looking for a browser
user agent. This information is sent with each and every request
from your browser. If you want to view your user agent you should
visit viewmyuseragent.com