I have given this much thought and I believe you are both right. Just as it was a huge revelation to me about David progressing after 6 months and the physical/emotional aspects, I think my husband would get even more out of it because it is coming from a fellow survivor (not just his wife, as you mentioned). I also think that because he is a very private person and has, at least so far, decided not to attend counseling/support groups in person that is forum would let him ask questions/discuss issues more freely. I also think it would help him tremendously because this foundation addresses all aspects of the cancer (physical, as well as emotional, etc.).
Thanks for the ongoing advice; it is so helpful to have the help from others who have been through this. He and I will discuss the forum tomorrow (he is on a driving trip with our son and doesn't get back until then). I want to talk to him in person about the website and maybe even go to it with him, if he wants to.