Spam is any unwanted, unsolicited digital communication sent out in large numbers. Often spam is sent via email, but you can spread it via text messages, phone calls, or social media. In a tech support scam, a spam message says that you have a technical problem, and you should call or click on a link to contact technical support. Spammers on social media typically post nonsensical content too frequently that will most often irritate those who have it appear in their social streams.