Journalists can use the reverse search tool to determine the primary author of a photograph or the general date when it was first posted on the Internet. Photographers may use the 'search by picture' option to find out about other websites that are exploiting their photos without their permission. Reverse image search is being used by open-source intelligence (OSINT) hobbyists and experts on Twitter and Reddit to check the source and reliability of popular photographs since they may be exploited to spread misinformation.