Matt Egan's article "What is the Dark Web, What's on it & How to Access it" differentiates the dark web from the deep web. Although Egan admits that the two terms are often used interchangeably, he says that the deep web is a term for all parts of the Internet which cannot be accessed using normal search engines. The dark web exists within this and refers to sites which are intentionally secretive, sometimes because they facilitate illegal activity. The deep web contains much innocuous material apart from the dark web, such as content hidden behind paywalls.
Egan argues that the dark web is easier to access than most people think. All you need is the Tor Browser Bundle. However, it is dangerous to access the dark web. There is a great deal of malware, and you may also be subject to blackmail or data theft. It is much safer to stay out of the dark web.
Robert W. Gehl describes his article titled "Power/freedom on the dark web: A digital ethnography of the Dark Web Social Network" as an "ethnographic exploration of the Dark Web Social Network (DWSN)." Gehl argues that the DWSN is an experiment in empowerment and freedom, in which users attempt to escape the increasing constraints that have been placed on their use of social media by companies such as Facebook and Twitter. This exploration of social networking on the dark web includes both legal and illegal activities.