Websites often include code to detect browser version to adjust the page design sent according to the user agent string received. This may mean that less popular browsers are not sent complex content (even though they might be able to deal with it correctly) or, in extreme cases, refused all content.Burstein complaining "...I've been rejected until I come back with Netscape" . 11 January 2011 Thus, various browsers have a feature to cloak or spoof their identification to force certain server-side content.
