The dark web is the darkest place of the internet where most of the sites involved in illegal activities like here the user can buy database, virus, organs, weapons, drugs, counterfeit, funds transfer, hosting, gadgets and much more without any tax fee. and all things users can buy with the help of cryptocurrencies like Bitcoins, Monero, Bitcoin Cash and etc.
In United States jurisprudence, there is a distinction between the mere act of linking to someone else's website, and linking to content that is illegal (e.g., gambling illegal in the US) or infringing (e.g., illegal MP3 copies). Several courts have found that merely linking to someone else's website, even if by bypassing commercial advertising, is not copyright or trademark infringement, regardless of how much someone else might object. Linking to illegal or infringing content can be sufficiently problematic to give rise to legal liability.Compare  For a summary of the current status of US copyright law as to hyperlinking, see the discussion regarding the Arriba Soft and Perfect 10 cases.
Quora is a website where users generate the content entirely. They post questions via threads and other users answer them. It’s basically a yahoo answers type social network that works like an internet forum. Both threads and answers can receive “upvotes” which signify the answer was worthy and popular. The answers with the most upvotes are put at the thread’s top.
Organic results includes a wider range of websites—not just local businesses. While location may still be a factor in the organic results, it is not generally the dominant factor. The main factor is the authority of the website (or the credibility of the site), external links back to the site, the length of time the site has been live, and other considerations. This is why you will often see sites such as Yelp, Angie’s List, and Facebook show up high in search results.