Canadian users should know that Yahoo offers a Canadian version of its search engine (www.yahoo.ca vs. www.yahoo.com). Consider the following search performed in both the Canadian and International versions of Yahoo: Health - Diseases - Canada Only - Cancer - Organizations (www.yahoo.com doesn't offer the Canada Only option). A user who isn't aware of the BC Cancer Agency would miss this website if he or she relied on the initial search results provided in the lower half of the figure. Of course, one could use both versions of Yahoo to broaden one's search.

Figure: www.yahoo.ca (top) / www.yahoo.com (bottom)