@BrianJ As a product itself, it is amazing and blessing to the community, I find it extremely useful when I have to incorporate live code in my blog or when helping someone on other forums. But for daily usage, I have only used it 2-3 times since it was released. There is not much for me in it, and I prefer DAX Studio over it, as I am just interested in knowing what is happening behind the scenes.
I think the website is extremely useful when you are AFK and want to write down and try the code that you came up while in when the best of the best ideas hit you.