I've put together a simple "portal" for iphone users, which you can get to by going to http://www.rukind.com
on your iphone.
here is a page that talks about it:http://www.rukind.com/mobile/index/html
So far you can easily get to these forums and also get access to the guitar tabs.
The other app I whipped up was something I refer to as the "Dark Star Oracle" which allows you to create setlists, specifically for DSO now, and then get a list of Grateful Dead shows that have the same set list, until there is only one (or none). I have tested it with previous sets, and it has successfully guesses the shows, but I am positive there are some issues that I need to address, so if you are going to a Dark Star Show, and you have an iphone, give the app a try and let me know.
It has been specifically designed for the iphone, making it easy to find songs and build setlists.
Here is some more info about the Dark Star Oracle:http://www.rukind.com/mobile/darkstaroracle.html