1. Does he canvas move smoothly or in "jumps"?
2. If it moves in jumps will there be an overview section and/or the abiliy to selected the number of jumps (defacto setting the size of the canvas)?

If I understand it correctly the canvas is actually just an extension of the many home screens that exist now. The questions hat have been raised have been mostly about this extension creating clutter or making it harder to navigate?

Couldn't these problems be, at least partly, solved by letting the usen choose how big the canvas is like we choose cells in a table inserted in a word document and having an overview section similar to the one now existing for applications in Maemo 5?

What I'm envisioning is basically a pulldown menu where you pull to choose X*Y number of boxes for your canvas. hen going to a birds-eye view for some of the navigation (although this might have to be split up for larger canvases).