No. You can move the directories and then create symlinks to each directory. Just don't symlink system directories like /usr/share, moving and symlinking /usr/share/someapp is fine though.

http://wiki.maemo.org/Free_up_rootfs_space

That might be the page but it isn't loading right now. I searched for "maemo remove files to free space".

And why is your screenshot using the really old Google look? Keep logging out and back in until you get the new look.