The revised version of the Gigablast search engine, currently in beta, is worth a look. Some of its more unusual features, in comparison to other search engines, are as follows.
First, there is its “human-built” directory search, which is based upon the Open Directory Project. Second, there is Gigablast’s “freshness dating”. The latter allows the user to limit Web searches to pages that have been either newly added or significantly revised during the past day, month, or year.
Ernster, the Virtual Library Cat