Twitter community adds a context note to Joe Biden tweet:  The official Twitter account for the president tweeted, “When I took office, 18 million people had to rely on unemployment benefits. Today, that number is less than 2 million.” Twitter added a label to the post that read "Readers added context they thought people might want to know.” The added context read "On the eve of Biden’s inauguration, the number of Americans collecting continuing unemployment insurance was a little under 4.9 million." The context note also included a link that supported the note. The label is part of Twitter’s Community Notes system. Twitter users are able to sign up as contributors to add context to tweets.