The present technology concerns cell phones and other portable devices, and more particularly concerns use of such devices in connection with media content (electronic and physical) and with other systems (e.g., televisions, digital video recorders, and electronic program directories). One particular aspect of the technology concerns complementing primary content viewed on one screen (e.g., a television screen) with auxiliary content displayed on a second screen (e.g., a cell phone screen). Different auxiliary content can be paired with the primary content, depending on the profile of the user (e.g., age, location, etc.). Some embodiments make use of location information provided by the primary screen device. Other embodiments make use of content identification data provided by the primary screen device. A great number of other features and arrangements are also detailed.