Anonymous SMB sharing from OS X Lion (10.7)

Sharing a folder via SMB (the so called Windows Sharing) with OS X is easy. But username and password were always required. I wanted to make an anonymous share and didn't know how.

Sharing is done like this:

One can see the Everyone user added and still a password was required to log in. Accidentally I found the fix for that.

I had to enable the guest user for file sharing:

That's it. Problem solved.

NOTE: The guest user is disabled by default in OS X Lion. You'll have to enable it first.