A computer-implemented method implemented via the Internet for coordinating a current or future event between a user of a mobile Internet device and other users communicating through the Internet. The method includes receiving the current or future activity information pertaining to the future event from the user via the mobile Internet device. The current activity pertains to an activity occurring at a current time relative to a time the future activity information is received. The future activity pertains to an activity occurring at a future time relative to a time the future activity information is received. The method further includes transmitting the current or future activity information to a backend database coupled to the Internet, the backend database being remote from the mobile Internet device. The method further includes rendering the current or future activity information accessible to at least one recipient via the Internet. The recipient represents a subset of the users coupled to the Internet and having access privilege to information pertaining to the current or future event involving the user.