I spent some time yesterday giving the whole project a look and whether or not it achieves its goals. What I think is that although it finally traces the pictures into SVGs yet it is not easy to use. There’s tons of usability work that needs to get done over there, and more help and samples need to be there as well to direct the users on how to use it.
The simplest way is to record screencasts for myself working. So, I added a screencast, you can watch it here . There’s a link to the same screencast from the help/faq page.