Some open-access publishers publish papers without peer review to make easy money. Some publishers publish articles in their journals within one or two days after submission, provided publication charge is paid. These publishers even advertise in their website and “calls for paper” that they will publish the paper within 1-4 days of submission. Jeffrey Beall, the Denver-based former librarian, first coined the term “predatory publishing” in 2011, to identify such predatory journals. But at the later stage, his methodology to identify predatory journals was questioned. Many academicians proved that Beall's evaluation was biased and erroneous. Please see the related discussion here: http://bit.ly/wikipedia-Beall. But nobody can deny the contribution of Mr. Beall to identify the black side of open access scholarly publication.