Design question: portlets drop target indicators?

[Anastasia Cheetham]

I'm hoping someone who worked on the uPortal portlet reorderer mockups  
found at

     http://wiki.fluidproject.org/display/fluid/Portlet+Reorderer 
+Mockups

has a moment to think about a couple of further questions:

1) If someone drags a portlet over top of the space around the  
portlets (e.g. beside a portlet, or in the empty space toward the  
bottom of a column), should they be able to drop the portlet? If so,  
where should it land? Should it automatically go to the bottom of the  
column? Currently, you can only drop a portlet if you are dwelling  
right over an existing portlet:

http://build.fluidproject.org/sakai-imagegallery-tool/sample-code/reorderer/concrete/uportal3-newskin/new_theme_sample_html.htm

2) It will happen that someone might drag all of the portlets out of a  
column, and wish to drag something back into the empty column. In this  
case, what should the drop target look like?

-- 
Anastasia Cheetham                   a.cheetham at utoronto.ca
Software Designer, Fluid Project    http://fluidproject.org
Adaptive Technology Resource Centre / University of Toronto