Hi!...
I would like to do Portal Application like igoogle so I would like to list all portlet in a one portal which is name ListPortal and the users can drag and drop portlet from ListPortal to MainPortal and when user close a portlet in MainPortal, this portlet should hide and this portlet should list at ListPortal. Shortly, When a portlet closed in one Portal this portlet shows in a other Portal.

Thanks....