A method and system for performing garbage collection involving sensitive information on a mobile device. The distance the cavity extends into the interior is such that a bottom of the cavity is axially closer to the tip portion than at least a portion of a skirt separating the base portion and the upper portion. Rails are disposed in the fluid container near its periphery, and a stiffener is disposed in the fluid container, between the rails, near an end of the cassette. The traffic management system thus treats each vehicle as a packet and can monitor, control, or simulate the traffic on this physical layer by the packet traffic in the traffic control layer. The viewers can cast a vote for one of the images by selecting the desired image, in response to which the viewer andor contributor will be presented with overall statistics for that set of images as to how other viewers voted, as well as a next set of photos depicting the user in a different fashion andor cosmetic choice. Using the P2P streaming method, a video chunk can be disseminated to all peers within 1+log2 N time slots.