The Duke University Library has a mobile edition of their site. It's brief enough that I can cut and paste the front page:
Mobile Library Home
7 Phone: (919) 660-5880 (Perkins Reference)
8 Main Library Home Page (not formatted for mobile devices)
Key points about our pilot:
- Compact display: information optimized for the very small screen space available on handheld devices — every pixel counts.
- Compact file size: patrons often pay a fee for each byte transmitted to their device, and handheld devices often have very slow connection speeds — every byte counts.
- Tightly focused content: the content we provide is closely tied to the tasks people are most likely to undertake on a handheld device — context counts.
- Optimized Navigation: navigation is optimized for handheld devices (e.g., using access-keys for keypad navigation).
The one feedback I'd share is that although every byte is precious on a mobile connection, it doesn't mean that you can't think about using graphics to convey information that is best described graphically. In particular, I'd bet that a carefully cut to size line drawing map added as an image on the various "directions" pages would add a lot to them, without bloating page size.