I'm sure there must be some OpenACS projects in Spain.
I can definitely tell you of some classic ACS projects, however. competitiveness.com have
been using the ACS as an integral part of their business. Briefly,
they have their own development team who build sites to host
competitive purchasing clusters.
Four of us in the aD London office went out to Barcelona in June to
help out with a Bootcamp which they hosted; needless to say it was
probably better organised than most of our own 😊 They also coaxed us
into giving some talks too (hangovers permitting).
We also met two lecturers/researchers at Universidad Complutense,
Madrid, who came to the bootcamp. They have used/are using the ACS in
some of their research, though I'm a bit fuzzy on details I'm afraid.
Competitiveness.com put up some pages about the
bootcamp with the agenda, presentations, and some photos. So, if
you want to know what ACS users in Spain look like, there you are.