16. The system as claimed in claim 11 wherein the control unit is configured to: execute a database module, a rank module, a category identification module, and a periodic update module from time to time.
16. The system as claimed in claim 11 wherein the control unit is configured to: execute a database module, a rank module, a category identification module, and a periodic update module from time to time. 18. The system as claimed in claim 16 wherein the control unit is configured to provide further information of a result of a search query.