Using Safari, when clicking on the "Download" button, the Safari download manager will automatically download the file onto your desktop ... ...

However, the downloaded file often is not the file name specified on iQuizShare.com (such as harry_potter.zip or halo_trivia.txt). The name sometimes looks like "gid,66".

You can find the file name like "gid, ##" on your desktop, rename according to the quiz description on iquizshare.com:

1. to "quizname.zip" if the quiz is in zip format
   
2. to "quizname.txt" if the quiz is in txt format 
   
3. to "quizname.QuizPack" if the quiz is in iQuizMaker quizPack format
   

Now you have your quizzes, enjoy!