At the end of August, Snapchat let go about 20 percent of its employees, around 1,200 people. Twitter was bought in October by billionaire Elon Musk, who promptly fired about half of the social media platform's 7,500 employees. Also, the IT group Salesforce, which specializes in management solutions and cloud technology, announced on Wednesday that it was laying off around 10 percent of its employees, or just under 8,000 people.