Twitter on Thursday made it easier for users to identify political  campaign ads and know who paid for them, as social media platforms faced  the threat of US regulation over the lack of disclosure on such  spending. The microblogging site launched 'Ads Transparency Center' to  allow anyone to view ads that have been put on Twitter, with greater  transparency about US federal election campaign ads. The tool follows  Twitter's recently launched political campaign ads policy here and a  similar move by Facebook, which started a searchable archive of US  political ads last month.

 Facebook said on Thursday it would go even further by enabling users to  see listings of all active ad campaigns, whether the advertiser is  political in nature or not.  

 he features should help people spot misuse of Facebook, it added.  Twitter's ads centre gives users access to details such as demographic  targeting data for the ads from US political advertisers, along with  billing information, ad spending, and impression data per Tweet.