The Blake Lively and Justin Baldoni settlement has exposed the murky world of 'astroturfing' - coordinated campaigns using bots and fake accounts to manipulate public opinion about celebrities. Experts warn that shadowy PR companies now operate like an "underground underworld", using software to weaponise social media and drive fake outrage against stars, including Taylor Swift. #hollywood #celebrities #entertainment SUBSCRIBE to our YouTube channel for more videos: http://www.youtube.com/skynews Follow us on Twitter: https://twitter.com/skynews Like us on Facebook: https://www.facebook.com/skynews Follow us on Instagram: https://www.instagram.com/skynews Follow us on TikTok: https://www.tiktok.com/@skynews Sky News Daily podcast is available for free here: https://podfollow.com/skynewsdaily/ For more content go to http://news.sky.com and download our apps: Apple https://itunes.apple.com/gb/app/sky-news/id316391924?mt=8 Android https://play.google.com/store/apps/details?id=com.bskyb.skynews.android&hl=en_GB To enquire about licensing Sky News content, you can find more information here: https://news.sky.com/info/library-sales