I think Chinese Learn Online is definitely one of the better programs out there. It is a gradual course which takes the learner from total beginner with no previous knowledge, and builds up from there. I used several of the podcasts for a Conversational Chinese course that I taught at our local junior college, and the response from the students was very positive. The methodology is very sound, and the real advantage is that students are not overwhelmed in the beginning, nor are they permanently stuck in a lower level.

CLO is progressive so it helps reminding the bases and the written language (thanks to the new feature that teaches how to write the characters). It is also a real online "tutor", and everyone knows that repetition is the only way to learn a foreign language with efficiency. I also use Chinesepod as a complement for spoken language. I think these two chinese podcasts should not be considered as competitors, but as complementary tools. I hadn't spoken chinese for three years until I found your website. I am so happy to recover my former level and even more.