Search Engines
https://www.google.com/
Everyone can benefit from this site.
Google will change its logo depending on the day.
Bing
https://www.bing.com/
1/3 of internet traffic can benefit from this engine.
Bing has a natural language search engine.
Yahoo
https://www.yahoo.com/
No one can benefit from using this site.
Funfact people might not know: Yahoo is still a thing.
Ask
http://www.ask.com/
People who have specific questions that can only be answered by humans will benefit from this.
Ask has categories to help you find what you might be looking for.
Answers
http://www.answers.com/
Anyone can use this, especially if you have a human question.
Like Ask.com, but with a different name.