F.Y.I.:
The service includes all of the world, but of interest to visitors to the Nederlands, searching for the region Noord-Holland, in which Amsterdam resides, turns up 221 hotspots.
Search by type (restaurant, hotel, public spaces, etc) and by access provider (KPN, Eurospot, etc).
Addresses of each hotspot are provided, along with a link to the location, if one exists.
Direct link:
http://www.jiwire.com/search-wifi-hotsp ... =3098&zip=
http://www.jiwire.com
as it's available, we'll add the search facility to this site shortly. it might come in handy for some of you.