Hello, for the first time in 3 years, Im getting a Shared computer appearing on my Finder. Im running Snow Leopard and picture below. Im worried about security/privacy. What does this means exactly? Can "Anna" browse my files? Am I appearing on her computer? How do I make myself invisible? I can see her on both my macmini and macbook, but my persnoal macs do not appear on each other. Does this means I am also invisible to Anna and other Neibourghs Macs?