Video beats the audio star

At the start of this term decided to try using my PDA to record parts of my lectures, and these recording are in range of 3 to 4 minutes. The particular course that I selected for this is my High Level Programming for level 4 students, and to date I have made about 40 recordings. But I thought I would tryout something of an experiment by making these recording available in two forms, one being a straightforward mp3, while the other would feature a speaking CrazyTalk avatar. Although the speech content of the two media are identical, the CrazyTalk avatar version has attracted almost twice the number of viewings!