Wireless messaging and content provision systems and methods

A messaging system and methods used by content providers to deliver items of content stored in an internet-accessible storage system to a cell phone by causing communication of notifications or paging calls to the cell phone that specify the item of content from among other items of content stored in the storage system and include a system address for the cell phone to initially contact to request the item of content; and methods that identify the system storing the content, that receive identifiers from a separate identification service; that update the content without causing communication of another notification; and that provide for performing action on information at different times, and for selective paging.