I think that's the key, and I feel stupid now for not realizing it. Our first paragraph has to describe why to use OpenACS IN TERMS OF WHAT IT DOES THAT OTHER PACKAGES DON'T. The basic test here is to come up with something that is a good reason and could not be on other sites. For instance, "scalable" and "platform" and "open source" are all good and do differentiate OpenACS, but even all together they're not unique. What is unique and positive about OpenACS?