Facebook bans "cloaking" of spam sites that fool filters

“Cloaking” sounds sci-fi but it’s actually a trick used today by spammers to show content moderators or search engine spiders an innocent looking version of their site while real visitors just see ads and scams. For example, some spammers try to fool Facebook’s review team and tech by showing any of its staffers’ IP addresses a benign landing page for links or…