Methods and apparatus for efficiently communicating time varying data

A method of operating a first device to communicate information, the method comprising:

• operating a first transmitter in a first network interface corresponding to a first network to transmit a first identifier, said first identifier corresponding to first information that is available via the first network, said first information indicating a source of first time varying data and a description of the first time varying data, wherein the first network is a network which includes one or more devices which broadcast expression identifiers which can be resolved to other information using information mapping expression identifiers to expressions, said first identifier being an expression identifier transmitted on the first network which resolves to said first information, said first information and said first identifier are static and remain unchanged during a first period of time during which said first time varying data changes;
• and
• operating a second transmitter in a second network interface corresponding to a second network to transmit a second identifier, the second identifier corresponding to the first time varying data.

(canceled)

(canceled)

A first wireless device comprising:

• a first network interface corresponding to a first network, said first network interface including a first transmitter configured to transmit a first identifier, said first identifier corresponding to first information that is available via the first network, said first information indicating a source of first time varying data and a description of the first time varying data, wherein the first network is a network which includes one or more devices which broadcast expression identifiers which can be resolved to other information using information mapping expression identifiers to expressions, said first identifier being an expression identifier transmitted on the first network which resolves to said first information and wherein said first information and said first identifier are static and remain unchanged during a first period of time during which said first time varying data changes;
• and
• a second network interface corresponding to a second network, said second network interface including a second transmitter configured to transmit a second identifier, the second identifier corresponding to the first time varying data.