Internet search tools

• BookCrossing - enables book sharing and discussions of authors, characters and books in every genre throughout history upto current releases.
• CiteULike - a free service to help you to store, organise and share scholarly papers. CiteULike automatically extracts citation details. Find out who is reading the same papers and use tags to group similar papers together.
• Delicious - a social bookmarking service that allows users to tag, save, manage and share web pages from a centralized source.
• Digg - a place for people to discover and share content found on the web.
• Diigo - a research and collaborative research tool as well as a knowledge-sharing community and social content site.
• Facebook - a free-access social networking website.
• LibraryThing - an online service to help people catalog their books easily. LibraryThing also connects people with the same books and comes up with suggestions for what to read next.
• MySpace - an online community where photos, journals and interests can be shared with a network of mutual friends.
• StumbleUpon - helps user to discover and share great websites matched to personal preferences. StumbleUpon uses ratings to form collaborative opinions on website quality.
• Twitter - a real-time short messaging service that works over multiple networks and devices.
• YouTube - find and watch videos, interact with other YouTube users and around shared interests, make and broadcast videos.

• Clusty
• jux2 - "The leading search engines are much more different than people think, and typically have fewer than 3.5 of their top 10 results in common...jux2..compares results in Google, Yahoo & MSN."
• Ixquick
• Mamma: the Mother of all Search Engines
• Metacrawler - utilizes metasearch technology to compile results from many of the Web's major search engines such as Google, Yahoo, Bing and Ask.
• Zuula - provides the results from favorite search engines unaltered, so you can check those first and then get results from other search engines simply by clicking on their tabs.

Invisible web

• Complete Planet: The Deep Web Directory - A comprehensive listing of dynamic searchable databases with documents that cannot be crawled or indexed by surface web search engines.
  

Evaluating websites

• Critical Evaluation of Resources on the Internet - from the University of Alberta.
  
• Evaluating the quality of information on the Internet - "A checklist for discovering quality in Web-based information, commentary on technical trickery, examples of bogus Web sites, and resources for learning more." Excellent information from the Virtual Chase: Legal Research on the Internet.
  
• Evaluating Web Content - how to evaluate websites, blogs, wikis etc.
• Evaluating web sites - criteria and tools, from Cornell University.
  
• Evaluating Web Sources - from Queen's University .
  
• Sink or Swim: Internet Search Tools & Techniques - an excellent workshop from Okanagan University College.
  
• Thinking Critically about Web 2.0 and Beyond
  

Search strategies

• Bare Bones 101 - a basic tutorial on searching the web, from the University of South Carolina.
  
• Distinguishing Scholarly Journals from Other Periodicals - From the Library at Cornell University.
  
• RDN Virtual Training Suite - set of online tutorials designed to help students, lecturers and researchers improve their Internet information literacy and IT skills.
  
• Recommended Search Strategy - from UC Berkeley.
  
• Using Primary Sources on the Web - Defining, finding & evaluating primary sources on the web.
  
• What is a Scholarly Journal? - "This guide defines the different types of journal and magazine sources (print and web) you will encounter while doing library research, and discusses how to identify and evaluate them." From Simon Fraser University Library.