Facebook Again Declines to Limit Political Ad TargetingFacebook has decided not to limit how political ads can be targeted to specific groups of people, as its main digital-ad rival Google did in November to fight misinformation. Neither will it ban political ads outright, as Twitter did last October. And Facebook still won’t fact check them, as it’s faced pressure to do. Instead, it is announcing much more limited “transparency features” that aim to give users slightly more control over how many political ads they see and to make its online library of political ads easier to use. These steps appear unlikely to assuage critics — including some of the company’s rank and file employees — who say Facebook has too much power and not enough limits when it comes to its effects on elections and democracy itself. Since last fall, Facebook has insisted that it won’t fact-check political ads, a move that critics say gives politicians license to lie in ads that can’t be easily monitored by outsiders. CEO Mark Zuckerberg has repeatedly argued that “political speech is important” and that Facebook doesn’t want to interfere with it. Google, the digital ads leader, is limiting political-ad targeting to broad categories such as sex, age and postal code. Facebook said in a blog post Thursday that it considered limiting custom audience targeting, known as microtargeting, for political ads. But the social network said it learned about their importance for “reaching key audiences” after conducting outreach with political campaigns from both major parties in the U.S., political groups and nonprofits. The company said it was guided by the principle that “people should be able to hear from those who wish to lead them, warts and all, and that what they say should be scrutinized and debated in public.” Facebook does plan to let users choose to see “fewer” political and social-issue ads, although it won’t let people exclude them entirely. It’s also going to let people choose whether or not to see ads, political or otherwise, from advertisers targeting them using their contact details such as email address or phone number. The company is also tweaking its ad library so people can search for exact phrases and limit results using filters such as ad-audience size, dates and regions reached. Facebook’s ad library currently lets anyone find out how much was spent on an ad, how many times it was seen, and the age, gender and location of the people who saw it. Sam Jeffers, co-founder of Who Targets Me, an advocacy group researching political advertising, said Facebook was wise to permit microtargeting for political ads, despite some calls for a ban. He said it was better to provide more information on ads because it would give more insight into the actors behind them and their strategies. Facebook has made a start in that direction by adding information on an ad’s audience size, but it should give much more explanation about targeted ads, which he said are based on databases cross-referencing people’s emails with, for example, their voting history and credit scores. “By making it easier for you to understand what data’s in there, you can also understand what the advertiser’s intent was,” Jeffers said. Facebook says 85% of targeted advertising campaigns by U.S. presidential candidates are aimed at audiences of more than 250,000 people. But given that the 2016 election was effectively decided by roughly 100,000 voters in three or four states, Jeffers said, Facebook should do more to let people monitor political campaigns and their advertising in real time. Jeffers also said he welcomed the improvements to the ad library, “assuming that people actually bother to use it.” The changes related to ad disclosures will go into effect over the next three months in the U.S. and other countries where Facebook puts the “paid for by” disclaimers on political ads. The political-ad controls won’t roll out in the U.S. until early summer; the company will “eventually” expand them to other regions.