Christian Science Monitor (Feb. 10) -- A study led by researchers at the University of Illinois of a small group of users found that more than 60 percent did not know that Facebook was filtering their feeds. After learning of the features, the researchers noted, most of the survey’s participants said they were still satisfied with the site’s features after learning of the filtering. Some also said they began using the features more after learning of them. Also: Fortune (Feb. 8).