I started to like the YouTrack product. It's simple to use and very eye pleasing and yet shows all the important data to users. Good job to the JB team!
I am curious if you guys have any plans to create a separate product for Wiki Engine as a standalone web application? A enterprise features of a Wiki system like Attlassin Confluence is a very powerful and useful tool for development. It would be nice to see this happens along with your YouTrack product.