Users of Reddit and 4chan identified a number of "suspects" in the Boston Marathon bombing and posted them online.
The search for a Boston Marathon bombing suspect has become a laboratory for the power of the Internet, as enterprising users of the Reddit and 4chan online networks spent the days following the terror attack trying to find "suspects" in the videos and photographs taken before, during and after two explosions that killed three people and injured dozens more Monday afternoon near the event's finish line.
The official hunt for a suspect was led by the FBI, and initial media reports on that investigation were vague, as the first description of a suspect only said that authorities were searching for a darker-skinned or black man with a black backpack and black sweatshirt, and that he would likely have a foreign accent and perhaps be a foreign national.
Other bits of evidence came out Tuesday and Wednesday, including a photograph reportedly of a backpack that may have been used to contain one of the bombs, details about and photos of the type of pressure cooker thought to be used to make one or both of the bombs, and more.
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Redditors and 4chan users combined the evidence reported on in the media with their technological savvy and the power of crowd-sourcing to single out a number of individuals who fit a makeshift profile who were near the finish line Monday.
Reddit users even set up a whole section -- called a "subreddit" -- of the website calledFindBostonBombers for the express purpose of organizing the efforts by users to find the person or people responsible for the Monday attacks.
"This subreddit is a place for people to post images, links, and thoughts about the potential identities of those responsible for the bombing. HOWEVER, please keep in mind that most or all of the 'suspects' being discussed are innocent people," the FindBostonBombers subreddit description reads.
Ten of these "suspects" are pictured below, along with explanations of what the users who posted the images saw that made them single them out.