QWERTY is a secret code word used by pedofiles and porn junkies. It is added to the end of file names as a method to return more porn results when using file sharing programs such as WINMX. Also used to disguise illegal child porn files.
If you can't find the porno your looking for, just try searching for "QWERTY."
Save the file as Big Booty Girl Qwerty.pic. It will get more hits that way.