Yeah that works samheights. By looking at the them it looks like Sidebars 2,3 and 4 are all placed within the footer.
Another sidebar is going to have to be created to show up underneath Sidebar 1 in order to get the FaceBook menu to show up in a separate section under the Twitter list.
I may be able to help you add in another sidebar like you are looking for if you can provide me with the sidebar code.
Without being able to see how the files are configured I'm going to give you a basic rundown. Go into the Editor which you can find under the Appearance menu on the left hand side of your Dashboard. Once that page is loaded look for sidebar.php on the right hand side of the screen.
Click on that link and you should see some code popup in the middle of the screen. Highlight all of the code that pops up and copy it. Then head over to http://pastebin.com and sumbit the code there. They will send you an email with a link to your code, reply here with that code.
Hopefully then I can help you out.