In response to Burtonini's post on URIs
The sidebar is such wasted space, and yet, it has the potential to be so simple and easy to use.
Imagine the simplicity of making sidebars work like they do in Evolution. Except in the nautilus sidebar, you would have shortcuts. Common things that a user might need, such as Applications, Fonts, CD Writer, Network, etc.
To take that a step further, allow the user to drag into the sidebar commonly used directories.
Also consider what XFCE does with XFFM and the books feature. I think Gnome could really benefit from using the Book feature from XFFM, and putting it in Nautilus some how.
Sorry, just dreaming.