1. A communications system comprising: at least one mobile wireless communications device for storing personal interest information and for storing calendar event data; and a notification server communicating with said at least one mobile wireless communications device via a wireless communications network, wherein the notification server is configured to access the personal interest information and calendar event data from said at least one mobile wireless communications device, and send notifications to said at least one mobile wireless communications device based upon the personal interest information and the calendar event data and with increasing frequency based upon increasing proximity to an upcoming calendar event.