[Twitter advertising revenue may decline sharply this year Musk tries to reassure customers] Musk appeared at the Possible marketing conference on Tuesday local time to make the latest appeal to Twitter advertisers, trying to reassure them that "the platform is a friendly and valuable platform for their brands," according to the Wall Street Journal. Twitter will face a sharp decline in advertising revenue in 2023, according to a forecast released by digital research firm Insider Intelligence. The agency expects Twitter's advertising revenue for the year to be just $2.98 billion, down from the $4.74 billion forecast in October last year, mainly because "advertisers don't trust Musk."