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Subject Lists and Directories Chart || Search Engines || Meta-search engines || (back to Subject Lists and Directories summary page)

Directory/List	Yahoo!	Google Directory	About.com	Infomine	Librarians' Internet Index	Britannica
Contents	dir.yahoo.com	directory.google.com	www.about.com	infomine.ucr.edu	www.lii.org	www.britannica.com
Size	2.5 million	1.5 million	1+ million	105,000	16,000	200,000
Other
Online help	help	directory help help center	help	search tips	help	search tips
Searching
To require	+	+ (use only to require common & "stop" words)	default	default	default	+
To exclude	-	-	none	none	none	-
Phrases	"santa cruz"	"santa cruz"	"santa cruz"	"santa cruz"	"santa cruz"	"santa cruz"
Stemming	dog*	none	none	(automatic)	dog*	dog*
Boolean	Default: AND; OR (options only)	Default: AND; OR available (must be capitalized)	Default: AND;	Default: AND; AND, OR, ( )	Default: AND; AND, OR, NOT, ( )	Default: OR; AND, OR, ADJ (w/in 15 words), ( )
Advanced    search	yes	no	no	yes	yes	no

Updated 7/06; Basic format based on Carol Leita's InfoPeople Search Engines Quick Guide.