Searching the web with questions

Most of the the search engines are designed for us to search with keywords. After we enter the keywords, the search engines look for web pages with the keywords. Alot of the time, we get irrelevant results and we waste alot of time going through useless web pages. The founder of Ask.com created a search engine that based on questions. We enter the question and it gives us suggestions on a list of questions that are similar to our question. We get better search results with Ask.com. Ask.com is making millions from advertising on it.

Problem: Most of the search engines are based on keywords. They produce alot of useless and irrelevant search results.
Idea/Solution: Website + Search engine based on Questions + Answers are search results
Site: http://www.ask.com/