A computer readable medium is disclosed containing a computer program including but not limited to computer executable instructions that when executed by a computer are useful in performing a method for presenting advertising data, the method including but not limited to sensing current trick-play command data at an end user device; updating trick-play trend data for the end user device based on the current trick-play command data; and adjusting a number of advertising data items in an advertising data buffer presented at the end user device based on the trick-play trend data. A system is disclosed useful for performing the method. A data structure is disclosed for containing data used by the system and method.