Why does Iheart radio use up my battery at about double the rate that a streaming podcast does? Aren't they both doing essentially the same thing? ie, streaming audio? I can listen to streaming podcasts over 3g for upwards of 8 hours on a fully charged pack but Iheart radio drains it dry after just 3 to 4 hours. Do other radio apps drain the battery that fast too? I have a Moto droid 1 btw.