3. The information processing apparatus according to claim 2 , wherein the processor is further configured to: acquire the word-of-mouth transmission information after being input in the terminal from the terminal and record the acquired word-of-mouth transmission information; divide the recorded word-of-mouth transmission information into a plurality of words and extract keywords from the plurality of divided words; and record the extracted keywords and the acquired terminal environment information, while associating the extracted keywords with the acquired terminal environment information.
3. The information processing apparatus according to claim 2 , wherein the processor is further configured to: acquire the word-of-mouth transmission information after being input in the terminal from the terminal and record the acquired word-of-mouth transmission information; divide the recorded word-of-mouth transmission information into a plurality of words and extract keywords from the plurality of divided words; and record the extracted keywords and the acquired terminal environment information, while associating the extracted keywords with the acquired terminal environment information. 4. The information processing apparatus according to claim 3 , wherein the processor is further configured to: acquire bulletin information from a server unit; acquire position information from the server unit when the position information has been added to the bulletin information and acquire position information designated by the bulletin information from a position information recording portion on which point information concerned with predetermined points has been recorded; wherein the information processing apparatus communicates with the server unit which records the bulletin information posted by information providers; wherein the terminal environment information contains position information expressing the current position of the terminal; and wherein the processor is configured to divide the acquired bulletin information into a plurality of words and extract keywords from the plurality of divided words in accordance with a predetermined standard; wherein the processor is further configured to record the extracted keywords and the acquired position information while associating the extracted keywords with the acquired position information.