"Despite the widespread shortages of iPhones all across the country, if you’re still willing to spend your hard-earned time standing in line in front of your local Apple Store, you’ve got help on your side. You probably already know about the iPhone availability checker, which tells you the night before whether or not a store has phones in stock for the following day."...full articel...
http://www.macworld.com/article/134723/2008/07/store_hours_extended.html?lsrc=rss_news