Check out powerfolder, a free java-based file sharing and synchronization utility. I'm using it to synch the subscription list for my feeddemon RSS feeds so the stuff I read at work doesn't show up at home and vice versa. It takes a little twiddling to set up (and on the mac I had to use the webstart version, the download version failed to run), but it's worth the trouble for file sharing and synchronization and free is a great price.