An information re-organization system includes a plurality of counters coordinated to meaning attributes, and a re-organization incentive notification unit that updates, in case the information stored in preset storage unit has been updated, value of a counter out of the multiple counters that has the meaning attribute associated with contents updated. The information re-organization system also includes an information re-organization processor that executes, in case the value of the counter section updated has met one of a number of predetermined conditions for information re-organization, a processing for information re-organization corresponding to the condition for information re-organization on the information stored in the preset storage unit.