I was at a conference in San Antonio in July where Westlaw announced a new graphical interface for "shephardizing" US caselaw.
The dome url is http://west.thomson.com/gkc
I talked to the Canadian rep who said this is under development in Canada, but not yet available. I reccomended that they consult with the legal research and academic communities on features, specifically on being able to note up foreign cases in Canadian courts, as this is now a significant aspect of Canadian legal research.
I urge Slawites to do the same.
I think graphical keycite is great, but I'd like to hear other opinions.