Currently Being ModeratedDec 3, 2012 12:16 PM (in response to Rafaq)
Probably because with podcast theres a start and finish. When your finish wiht a podcast it stop - thus you stop streaming.
while you can stream internet radio all day long.
Currently Being ModeratedDec 3, 2012 2:14 PM (in response to Rafaq)
Streaming radio is also using either WiFi or cellular data. If you've already downloaded a podcast, it's not using data, thus using less power. If you're streaming the podcast, it may also be a much lower quality stream. That might have an effect as well.