How does Personal File Sharing work?

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http://askubuntu.com – I'm currently using Samba to share files between my ubuntu PC and my mac. However, I notice that there is a 'Personal File Sharing' preference panel built into ubuntu. Is it possible to view my ubuntu Public folder from my mac using just what comes pre-installed on ubuntu, since every guide/tutorial/post I've found so far just tells me to use Samba? (HowTos)