ARGH!! (My small kingdom for a decent folder syncing solution)

Ok. For the third (3rd) time, my syllabus (or a substantial chunk of) for my spring course has been gobbled up by http://www.martian.com/SlingShot.html

Counter to what their documents claim, you cannot work from the "subscribed" folder - the stuff in the publishing folder will randomly overwrite your changes. Even when it has been specifically instructed not to.

So - am I going to have to get all rsync up in here, or is there some other decent reliable OSX folder syncing option out there?

Note: I reserve the right to make empty threats about violence for any suggestions to use .Mac/mobileme