Google Inc., is unveiling a calendar service that allows users to store appointments online, receive reminders about them and share those plans with others.
The offering, available starting Thursday at
http://www.google.com/calendar, is designed to make it easy for users to add entries, said Carl Sjogreen, product manager for Google Calendar.
Gmail, Google's mail service, has been modified to automatically recognize when messages mention an event so recipients can seamlessly add it to their calendar.
Google Calendar is the latest offering from the Mountain View-based company, which analysts have said is gradually replacing its search-only business model with that of a portal, or all-purpose Web site. Over the past four years, Google has been catching up to rivals Yahoo Inc. and Microsoft Corp.'s MSN by adding e-mail, news, photo sharing, instant messaging, shopping and mapping services and a finance section.
http://www.google.com/calendar 
Google introduces online calendar service 
