Jureeka! is a Firefox extension from Michael Poulshock, a public interest lawyer in
You can create tags for legal sources found on the web and Poulshock has plans for a search/recommendation feature. Now Jureeka! links to around 275 volumes from the Federal Reporter, covering U.S. federal circuit court cases from 1880-1992 (hosted at Open Jurist (volumes 1-95) and Google Book Search (volumes 96-281), to several major Canadian legal sources, including: The Constitution Acts (1867 and 1982); Supreme Court cases from 1876 to the present (S.C.R. and SCC citations), Federal Court cases from 1988 to the present (F.C. citations), Consolidated Statutes of Canada, Consolidated Regulations of Canada; and citations to U.S. state cases in the regional reporters, such as A.2d, P.2d, P.3d, N.E.2d, N.W.2d, S.E.2d, and S.W.3d from the last decade or so, made available courtesy of Fastcase's Public Library of Law and Precydent.
I’m not a law librarian, but this seems like a great tool.
Jureeka! blog: http://www.jureeka.blogspot.com/
Download from Firefox (now version 1.5): https://addons.mozilla.org/en-US/firefox/addon/6636