Various embodiments of the present invention beneficially allow greater flexibility in the choice of alert modes for an electronic calendar system. Email messages, SMS, EMS or MMS messages, telephone calls and the like are used to replace or supplement the alerts generated by the electronic calendar....http://www.google.com/patents/US20060285533?utm_source=gb-gplus-sharePatent US20060285533 - Method, system, and article for telephone notification of an online status of a user
