While web sites such as Popup Chinese and Chinesepod undoubtedly have their use as a way to progress in the language in a relaxed way, it seems to me that a lot of the time one is listening to an English explanation of a very limited amount of Chinese vocabulary. A podcast may only be 10 minutes long but listen to a couple of them a day and they quickly add up.
As a beginning learner, I have the feeling I learn a lot more a lot faster by sticking to a good textbook and the associated Skritter list. Conversely, I have a feeling that sticking to learning characters and starting to learn to read (while shadowing the audio) sooner rather than later would be a more efficient learning tool than listening to an interesting conversation in which some Chinese is thrown into the mix (which you then manually have to add to Skritter and spend more time learning) for 10 minutes.
One obviously has to lose the training wheels at one point but as long as one can reach a certain level with textbooks and graded readers, that seems to be the fastest path to proficiency?