How long did everybody have to use Google Now before it really started to become useful? I have been using it for about a month and I really am not impressed with what it is doing for me. The vast majority of the time it just shows estimated time to work/home, appointments on my calendar, reminders, and the weather. I was hoping to see information related to the other card categories as well. At this point I don't feel it's worth the additional drain on my battery.