AND, OR, NOT
example: X AND (Y OR Z) NOT Z'
~ = synonyms
Boolean operators
+, -, and ()
site restriction (Which Library of Congress pages mention Shakespeare?)
link lookup (Which pages link to the Lincoln Memorial home page?)
calculator built into search box
filetype (e.g., videos of bats)
(in others)
cluster search (Clusty—>Yippy)
Search Engine Watch - Submission & more
SearchEngines.com - Submissions & more