The 16th-century timber-framed thatched cottage that was his country home for his last three decades stands in excellent repair in Shallowford, a deeply rural, tiny hamlet aptly named for the fishing stream that runs through the property.
Jackson and fellow researcher Larry Pesce plan to release two tools, affectionately named Reaper and Stalker, that use Perl scripts to harvest data from the stream of location-tagged photos that are continuously posted via Twitter on services like Twitpic, YFrog, the more risque SexyPeek.