Abstract: A social networking system includes a mechanism for incorporating nodes in the social graph, where the nodes are associated with a web page. Each web page includes one or more tags, which contain meta-information for defining the node in the social networking system, such as the type of the node. The social networking system retrieves the tags from the markup language document and stores their information in connection with the node for the web page. The web page may be outside of the social networking system's domain and may be operated by an entity other than the social networking operator; thus, third parties can define, create, and maintain nodes that are then used by the social networking system. Users may then interact with the nodes on websites outside of the social networking system, and these interactions are tracked by and reflected back within the social networking system.

Abstract: A social networking system includes a mechanism for incorporating nodes in the social graph, where the nodes are associated with a web page. Each web page includes one or more tags, which contain meta-information for defining the node in the social networking system, such as the type of the node. The social networking system retrieves the tags from the markup language document and stores their information in connection with the node for the web page. The web page may be outside of the social networking system's domain and may be operated by an entity other than the social networking operator; thus, third parties can define, create, and maintain nodes that are then used by the social networking system. Users may then interact with the nodes on websites outside of the social networking system, and these interactions are tracked by and reflected back within the social networking system.

Abstract: A social networking system includes a mechanism for incorporating nodes in the social graph, where the nodes are associated with a web page. Each web page includes one or more tags, which contain meta-information for defining the node in the social networking system, such as the type of the node. The social networking system retrieves the tags from the markup language document and stores their information in connection with the node for the web page. The web page may be outside of the social networking system's domain and may be operated by an entity other than the social networking operator; thus, third parties can define, create, and maintain nodes that are then used by the social networking system. Users may then interact with the nodes on websites outside of the social networking system, and these interactions are tracked by and reflected back within the social networking system.

Abstract: A light to plug into a wall socket having a negative ion generator in the form of a pin. The pin design can be easily cleaned with a swab and cleaning solution such as rubbing alcohol, eliminating the need to trim or clean a brush electrode when corrosion or deposits form. The negative ion generator is always on and produces the negative ions to purify the air. The device can have a light sensor to activate the light when light is low. The device can also come with light emitting diodes which can be set to indicate the status of the various systems of the device. The device can come equipped with an air freshener that disperses vaporized perfume into the air.

Abstract: An air freshener to plug into a standard automobile cigarette lighter socket or alternatively the air purifier may be equipped with batteries so it can be left inside a refrigerator thereby freshening the air inside the refrigerator. A third alternative would be to have a power cord adapted to use an external power source, such as through the USB port of a computer or the alternating current wall socket of a home or office. The negative ion generator is in the form of a pin. The negative ion generator produces the negative ions to purify the air. The device can have a light sensor to activate the light when light is low. The device can also come with light emitting diodes which can be set to indicate the status of the various systems of the device. The device can come equipped with an air freshener that disperses vaporized perfume into the air. It also may come equipped with a switch to turn the ion generator or the light, or both on or off.

Abstract: A light to screw into a standard light socket having a negative ion generator in the form of a pin. The pin design can be easily cleaned with a swab and cleaning solution such as rubbing alcohol, eliminating the need to trim or clean a brush electrode when corrosion or deposits form. The negative ion generator produces the negative ions to purify the air. The device can have a light sensor to activate the light when light is low. The device can also come with light emitting diodes which can be set to indicate the status of the various systems of the device. The device can come equipped with an air freshener that disperses vaporized perfume into the air.

Abstract: A light to plug into a wall socket having a negative ion generator in the form of a pin. The pin design can be easily cleaned with a swab and cleaning solution such as rubbing alcohol, eliminating the need to trim or clean a brush electrode when corrosion or deposits form. The negative ion generator is always on and produces the negative ions to purify the air. The device can have a light sensor to activate the light when light is low. The device can also come with light emitting diodes which can be set to indicate the status of the various systems of the device. The device can come equipped with an air freshener that disperses vaporized perfume into the air.

Abstract: A controller is usable with a tractor that has a power supply and a trailer that has first and second auxiliary devices. The controller is configured to selectively enable and disable each of the auxiliary devices based on a predetermined set of device disabling conditions wherein: When any of the device disabling conditions occurs, then both auxiliary devices are disabled. When none of the device disabling conditions occurs then, when a first device-selecting condition occurs then the first auxiliary device is enabled and the second auxiliary device is disabled. And when a second device-selecting condition occurs then the second auxiliary device is enabled and the first auxiliary device is disabled.

Abstract: In accordance with the teachings described herein, systems and methods are provided for supplying power to a vehicle trailer. A connection device may be used to connect the vehicle trailer to a vehicle power line and to a control line from a vehicle electrical system. The trailer may include a main trailer electrical system and an auxiliary trailer electrical system. The main trailer electrical system requires power only when the vehicle trailer is in motion, and may be coupled to the connection device to receive power from the vehicle power line. A control unit may be coupled to the connection device, and may receive a control signal from the control line. The control unit may be used to switchably couple the auxiliary trailer electrical system to the vehicle power line based on the control signal.

Abstract: An apparatus exchanges a roll remnant and a full roll. The apparatus comprises a dump cradle and a roll-transfer surface. The roll-transfer surface includes an extension element capable of transitioning between a retracted position and an extended position. The apparatus also includes a roll-delivery element capable of providing a fresh roll of material to the dump cradle and of removing a remnant of a previous roll from the apparatus.