A computer readable article of manufacture comprising a tangible, computer-readable recordable storage medium tangibly embodying, in a non-transitory manner, computer readable instructions which cause at least one hardware processor to execute a method, said method comprising the steps of:
- storing positional information on at least a first avatar and a second avatar;
- receiving (i) at least one utterance from said first avatar and (ii) at least one utterance strength representing an importance or attention level of said at least one utterance;
- calculating at least one interest level between said first avatar and said second avatar based on said positional information;
- modifying an appearance of said second avatar in accordance with a value calculated from said at least one interest level and said at least one utterance strength;
- wherein said appearance of said second avatar is modified only when a value calculated from said at least one interest level and said at least one utterance strength is less than a predetermined threshold value.