1.Experimenting with your code while learning , with the inbuilt code window.
(really nice addition)
2.They have a very well structured lesson plan ! keeping in mind that the viewer will be anabsoulute beginner.
3.They provide an online IDE which is quite capable ! and very useful.
4.Also they have capabilities of server-side scripting all at one place.
5.They also provide online hosting upto 10MB and likely to increase ! which is indeed quite promising.
6.You can download the apps you have written and host them yourself if you actually want to !!
well that was a small review of a very promising service which has a lot of potential in the future . PROVIDED they dont make any strategically stupid decisions ! like going completely closed source !
bye for now !