Hey Robert, excellent work!
Is really up to date design. I love this.
A "what you can do with OpenACS?" will be more helpful for new visitors, maybe instead of "why use the framework".
Also, "how to get started?" instead of "how to install / how to work with...".
Home / Community / Wiki will be nice to use as first tabs. We do not use too much file-storage or calendar, while bug-tracker can be inside community tab. I will use Wiki, which is more common rather XOWiki that might confuse someone (as it is used now).
Forums deserves its own tab (and news as well), while photos might go somewhere else (not too many new things there).
What goes in the first page needs more though, although at this point the most active areas are forums, wiki and then news.
Use OpenACS instead of OpenAcs or other combinations.
Great!
