Abstract: Systems and methods are provided to facilitate the presentation of listings of different types as an ordered list. For example, subscription listings and pay for performance listings can be sorted into a mixed list to balance the protection of subscriptions for stable and long term revenue, and the presentation of pay for performance listings that can increase short term revenue.

Abstract: A handheld electronic device cradle (300) with heat-dissipating capability is provided. The cradle is used for charging a build-in battery in a handheld electronic device (380) and connecting the handheld electronic device to a host computer so that the handheld electronic device can exchange information with the host computer. The cradle comprises a casing (310), a fan-mounting seat (350) set up in the casing, an electrical fan (351) secured to the seat and a cable (314) for connecting the cradle with the host computer. An insertion slot (311) is provided in the casing. When the handheld electronic device is inserted into the insertion slot, the cradle charges the battery in the handheld electronic device and connects the handheld electronic device with the host computer. Furthermore, the handheld electronic device can communicate with other devices through a wireless network.

Abstract: A handheld electronic device cradle (300) with heat-dissipating capability is provided. The cradle is used for charging a build-in battery in a handheld electronic device (380) and connecting the handheld electronic device to a host computer so that the handheld electronic device can exchange information with the host computer. The cradle comprises a casing (310), a fan-mounting seat (350) set up in the casing, an electrical fan (351) secured to the seat and a cable (314) for connecting the cradle with the host computer. An insertion slot (311) is provided in the casing. When the handheld electronic device is inserted into the insertion slot, the cradle charges the battery in the handheld electronic device and connects the handheld electronic device with the host computer. Furthermore, the handheld electronic device can communicate with other devices through a wireless network.

Abstract: A portable electronic communication device (110) includes a base (150), a cover (160), and a receiver (118). The base (150) has a front surface (150a). The cover is mounted to the base in such a way that the cover can be folded upon, unfolded from, and turned around the base. The cover has a compartment (180), a front surface (160a) and a rear surface (160b). The front surface and the rear surface of the cover have a number of first apertures (124a) and a number of second apertures (124b) respectively, and the compartment communicates with an outside of the cover through the first apertures and the second apertures. The receiver is deposited in the compartment between the first apertures and the second apertures. Sound generated by the receiver can radiate out of the cover through the second apertures or the first apertures of the cover while the cover is folded upon the base in such a way that the front surface or the rear surface of the cover rests on the front surface of the base.