I am set to get my new iPhone today (pending UPS is accurate) and had a question about Siri. The most useful feature to me is the location based reminders. "Remind me to grab my lunch when I go home", things like that. How does Siri "know" when you are home? Is this a location based setting through contacts, a setting in Fine My Friends? Or does it simply do it by time? Around 12:00pm it alerts you. Any one know this answer? Im excited to get my phone and try out Siri hands on. Cheers!