Internet Cranks
The rise of the Internet has given another outlet to people well outside the mainstream who may get labeled cranks due to internet postings or websites promoting particular beliefs. There are a number of websites devoted to listing people as cranks. Community-edited websites like Wikipedia have been described as vulnerable to cranks.
Science fiction author and critic Bruce Sterling noted in his essay in CATSCAN 13:
Online communication can wonderfully liberate the tender soul of some well-meaning personage who, for whatever reason, is physically uncharismatic. Unfortunately, online communication also fertilizes the eccentricities of hopeless cranks, who at last find themselves in firm possession of a wondrous soapbox that the Trilateral Commission and the Men In Black had previously denied them.
There are also newsgroups which are nominally devoted to discussing (alt.usenet.kooks) or poking fun at (alt.slack, alt.religion.kibology) supposed cranks.
Read more about this topic: Crank (person)