My first post on SEOmoz.org on creating SEO friendly maps just got published, check it out and let me know! You may also want to check my post on creating SEO friendly Widgets.

The main important points:
- Provide separate “list view” and “map view” pages
- Provide Alternative Links
- Don’t just create maps, create Social Maps
- SEO 101: optimize your surroundings
- Maps should not be the primary or the only way you deliver content on your site
- Crate Maps Index Page
- And of course Link Bait