After talking with an Ah-ha representative they explained that only certain search terms get displayed on AltaVista. I tried it out and only 1 out of over 100 keywords is displaying on AltaVista. It does happen to be my best keyword, but it certainly is not as good as I had hoped for.
The Ah-Ha representative explained that they had purchased certain words from AltaVista, but not others, so there would be nothing I could do to change the situation. Maybe it would be better if they said "as many as 1% of your keywords will be listed on AltaVista", rather than making it sound as if all of them would appear.
I hope others have had better results than I have. I think it is a good idea.