12 of them actually. Usually when I see these things, I know most of them. On this list, I only knew about 1/2 of them. Therefore, this is well worth sharing.

http://www.ismashphone.com/2008/08/iphone-tricks.html

Home buttons tricks from the same source.. I knew about these. 🙂

http://www.ismashphone.com/2008/08/home-button-iph.html