19. The system of claim 15 , said program code further comprising: program code for increasing a time remaining in respective ones of said idle timers in response to detecting a user performing a specific operation on said associated ones of said content items in said active subset of said set of content items.
19. The system of claim 15 , said program code further comprising: program code for increasing a time remaining in respective ones of said idle timers in response to detecting a user performing a specific operation on said associated ones of said content items in said active subset of said set of content items. 20. The system of claim 19 , wherein said specific operation is dynamically determined in response to determining at least one use pattern of said user.