Internet

Twitter surges as global user growth revives

Twitter shares jumped Thursday after an update showing it added millions of new users and boosted ad revenue in the fourth quarter, sparking optimism over its growth prospects.

Internet

Twitter's political ad ban will exempt some 'issue' ads

Twitter Inc. is making some exceptions to its recent ban on all political advertising, announcing Friday that it will allow "cause-based" ads for some economic, environmental or social issues.

Internet

Facebook misidentified thousands of political ads: study

Facebook misidentified tens of thousands of advertisements flagged under its political ads policy, according to a study released Thursday, which warned that the failure could lead to political manipulation.

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