7/15/2010: The user "Big_W" gave this add-on numerous one-star reviews, alleged that the description of this add-on as "OpenSearch compliant" is "false and misleading," and ranted about Westlaw not being "open source." But "Big_W" confuses the technical term "OpenSearch" with the concept of "open source" (see: http://en.wikipedia.org/wiki/Open_source_software). "OpenSearch is a collection of simple formats for the sharing of search results. The OpenSearch description document format can be used to describe a search engine so that it can be used by search client applications." (See: http://www.opensearch.org/Home and http://en.wikipedia.org/wiki/OpenSearch.) In fact, Firefox search add-ons are automatically rejected if they are not OpenSearch compliant. (See: https://addons.mozilla.org/en-US/firefox/pages/validation.)
Version 20081105: Originally released as v0.5 in Spring 2007.