https://apnews.com/217a2c041b13e7f647c5275ef29a6394 > SAN FRANCISCO (AP) — Tesla CEO Elon Musk won't be joining Twitter's board of directors as previously announced. The tempestuous billionaire remains Twitter’s largest shareholder. > Twitter CEO Parag Agrawal tweeted the news, which followed a weekend of Musk tweets suggesting possible changes to Twitter, including making the site ad-free. Nearly 90% of Twitter's 2021 revenue came from ads.