Graphics are 'not to my taste' but the engine is pretty cool.
They let you choose one of their 9 categories to do the searching (Web Engines, Business, Entertainment, News, Booksellers, Sports, Libraries, Reference, or Careers.)
Advanced Search lets you more than one category to search and they offer 2 boxes with the choice of AND, OR or NOT.
**n.b., Link that says it lets you 'change the search rules' actually lets you change the display rules. Options include:
Results per page:
10 results per page 20 results per page
Results per source:
10 results per source 20 results per source
Fastest Relevance Date