aboul automatically goes deeper (4 levels) while searching till there's a response.
If there's no answer, aboul asks user if he wants to reference/record
his query in dictionary. In this case, if word(s) concerned is not
blaklisted (by administrator), it will be displayed as 'to be
Everybody is free to participate in realtime
Administrator can do everything through administration console and he is alerted by mail for every important events on dictionary