I am not experienced with OpenACS, but I just wanted to say we will also be very happy to help greenpeace.
I may be wrong, but it would be (besides openacs.org 😊) the highest profile site using OpenACS. It would be interesting to have a case study so people selling openacs can use it as an argument for opensource solutions -it doesn't matter if it is Zope or OpenACS-.
In fact thanks to ACS been open source the change in the aD strategy will not affect aD clients that do not want to go to Java, or that are not satisfied with customer support or whatever. As Don just said options are good.
cheers
