I want to be able to peruse the Documents, Music and Pictures folders on my Windows 7 machine from my Macbook. The only way I could find to do this was to go the the Libraries, right-click Share With: Specific Users: Everyone, with Read/Write permissions. (I can't use Homegroups with a Mac AFAIK.)
From the Mac I connect using smb://mycomputername and then I need to log in with my Windows username and password. (Guest access is forbidden.) I then see the entire Users directory, containing my user folder and all its contents.
So, this does what I want, but is it a significant security risk? Is it better practice to share just a single "My sharing folder" on each computer, and just use that as a conduit for copying files across? What do other people do?