This is a relatively new search site, that according to it’s front page “A continually improving collection of questions and answers created, edited, and organized by everyone who uses it.”.
The thinking behind Quora is that the most interesting questions will rise to the top as people rate them. The same with the answers.
Recently, one person asked how much AOL spent to send out millions of trial software CDs it distributed in the 1990s. The closest answer was "over $300 million." But among the respondents were AOL co-founder Steve Chase and Jan Brandt, the chief marketing officer who came up with the idea of carpeting the country with sign-up discs. Both gave personal looks at a topic they know better than anyone.
In order to be highly successful, as experts in Silicon Valley say it will be, the site will need to appeal to the masses, and make its interface less baffling, but it's not entirely unthinkable that Quora could both get big and stay good.
If you’d like to learn more about Quora, here’s some information: http://www.quora.com/about