This is probably common knowledge to many, but recently I could not remember the leading case by Lord Denning on promissory estoppel. It is of course Central London Property Trust v. High Trees House  KB 130 130. So I searched Wikipedia and found a great entry for Lord Denning, links to a wikipedia entry and the full-text of some of his judgments, including High Trees. I was curious and searched for “leading cases” and found an entry for landmark decisions which I found very good. Although largely American oriented, so of limited use in Canada, there were also entries for landmark cases in Australia, the UK and Canada.
The possilbities for using web 2.0 wikis for collaboratively preparing class “CANS” (at UVic genteely referred to as “outlines”) jumped at me immediately.