I've looked for this question and haven't gotten a reasonable answer yet. If I synchronize a folder will it synchronize a symlink? Will it process all the way through the link to all the files within that symlink?
From the Ubuntu One FAQ:
Does Ubuntu One support symlinks or hard links?
No, Ubuntu One does not currently support symlinks or hard links. If you are running Ubuntu 10.04 LTS or higher you can synchronize folders within your home directory by right-clicking on them and selecting "Synchronize on Ubuntu One".