One approach, which I recently detailed in this story, involves scammers creating multiple copies of the same hoax article about a terrorist attack killing multiple people in a city. Each article is then edited to cite a different city, with the rest of the text and headline left exactly the same.
The hoaxers publish the articles on one or several websites and then join Facebook groups focused on the locations cited in the hoaxes. Once accepted into the group, they share the link with all the members. This ensures a hoax about, say, Chicago is seen by people who live there. Those people click on and/or share the link with others in the area, thus driving traffic to the websites hosting the hoax.
When it works well the hoax will go viral locally. If you create 10 or 15 of these articles, each about a different city, you can start to generate some decent traffic. (Source)