The following sites are useful resources. They include Career sites, Classifieds, Directories, General web-reference resources, Marketplaces, Metasearch engines, Portals, Professional networking sites, Search engines and Social networking sites.
General web-reference resources
Answers
CIA World Fact book
Education Resources Information Center (ERIC)
Encyclopedia Britannica
Internet Public Library
Map Quest
Multi Map
Reference
Weather
Wikipedia
Worldatlas
Search engines
Ask
Google
Bing
Pipl- people search
123people- people search
Peek You- people search
Zoominfo- people search
Meta Search
Dogpile
Mamma
Webcrawler
Deep/Hidden Web Search
Clusty
Complete Planet
IncyWincy
GeniusFind
Infomine
Intute
Librarians' Internet Index
Directories
Australia Yellow Pages
Austria Yellow Pages
Canada Yellow Pages
Ireland Conduit 11850
New Zealand Yellow Pages
South Africa Yellow Pages
Switzerland Yellow Pages
United Kingdom Yellow Pages
United States Super Pages
Portals
AOL
Go
Lycos
MSN
Yahoo
Marketplaces
Allbookstores
Amazon
Buy
Ebay
Classifieds
Craigslist
Gumtree
Kijiji
Career sites
Careerone
Career Builder
Indeed (one search, all jobs)
Jobs DB
Jobstreet
Indeed
Monster
My Career
Seek
Professional networking
Linkedin
Spoke
Xing
Social networking
Bebo
Blogger
Digg
Facebook
Flickr
Friendster
Live Journal
My Space
Orkut
Perfspot
Twitter
You Tube
Travel and Accommodation sites
Expedia
Flight Centre
Kayak
Orbitz
Travelocity