Given that the public map is out, I've been quickly scanning for large towns. Of course Brodgar at (108,-70) does not need to mentioned.
I've noticed six other big towns and any information that can enlighten me about who is there and why, etc, would be welcome.
The six towns are:
(-102,-122)
http://sabinati.com/HavenMap/?x=-102&y=-122&zoom=9
(-100,14)
http://sabinati.com/HavenMap/?x=-100&y=14&zoom=9
(11,17)
http://sabinati.com/HavenMap/?x=11&y=17&zoom=9
(28,39)
http://sabinati.com/HavenMap/?x=28&y=39&zoom=9
(-52,38)
http://sabinati.com/HavenMap/?x=-52&y=38&zoom=9
(-58,92)
http://sabinati.com/HavenMap/?x=-58&y=92&zoom=9