Fort Vancouver's other digital efforts to open up the historic site to a broader audience

Fort Vancouver Mobile is just part of the national historic site's efforts, led by Chief Ranger Greg Shine, to incorporate digital media into historical interpretation.
There are podcasts available on site, and here are some other links that you might find interesting:

FOVA Flickr Site: http://www.flickr.com/fortvancouvernps
Images can be uploaded and accessed by the public. Shine has been geotagging images as well, so they show up on the "map" feature as well as via augmented reality smartphone programs such as Wikitude, Robotvision, Layar, Geodelic, etc.

FOVA Twitter Feed: http://www.twitter.com/FtVancouverNPS
Site updates, media releases and other timely notices or occurrences.

FOVA Facebook: "Fort Vancouver National Historic Site"
People can become a "fan" of Fort Vancouver NHS and post images, updates, etc.

FOVA Foursquare: http://www.foursquare.com/venue/245388 A location-based/geosocial networking program for mobile devices, it lets the user "check in" at places; earn points, badges, and mayorships. And share that information with friends. The fort, Village, & VC are officially set up and available for folks to check in and become mayor, etc.