Methods and apparatus for collecting media consumption data based on usage
information of a media delivery device are disclosed. In an example
method, media information is received by a portable metering device
associated with a monitored individual such as a portable telephone, a
personal digital assistant, and/or a handheld computer. Usage information
indicative of a media delivery event associated with a media delivery
device such as a television is monitored by the portable metering device.
To form the media consumption data, the media information is associated
with one of a first channel and a second channel based on the usage
information.