I am starting to research the best design for an online company
directory/index. Each of the companies and organizations included will
fall into one over-arching market. Within this market companies or
organizations might fall into sub categories–so perhaps the use of
tags would be helpful. Search would also need to be conducted by the
starting letter. The concept is to initially make the directory
populated by the creator, but eventually the idea is to allow the
community to populate the directory.
Does anyone have examples of online directories that they find
exemplary? Are there any examples of directories that use search based
by tags and the first letter of the organization?