Abstract: A cap on a bottle is selectively opened to permit passage of liquid to and from the chamber and closed to prevent passage of liquid. The cap has a collar that threads onto the bottle's mouth and a shroud that moves relative to the collar by applying a longitudinal force to the shroud's shoulder. By applying the force, the shroud moves longitudinally toward the bottle. In some embodiments, a valve is thereby rotated to unblock a throat so that liquid may pass from the opening defined by the shoulder to the chamber in the receptacle. In other embodiments, a dome is thereby displaced longitudinally to unblock the throat so that liquid may pass through.

Abstract: A system and method of dynamic compensation for providing content recommendations. When a content recommendation is received from a first user, a first value of the content may be determined at the time related to receipt of the recommendation. A second value of the content may be determined after a first predetermined time period and a third value may be determined that is based on a difference between the first and second values. The third value may be paid to the first user. The first and second values may be indicative of demand over different time periods. Thus, recommenders may be compensated according to the individual success of the content they recommend, as measured by the increase in valuation of the content from the time of recommendation to a later time when the content reaches a threshold valuation or increases a predetermined amount.