Used to be called the pound sign. A Used to be called the pound sign. A hashtag is a way of coll... is a way of collecting Websites and apps that let people connect and share with eac... posts on a topic. For example, if you want to find a Thanksgiving dinner recipe, you could search A social media platform designed to make it easy to connect ... or One of the leading social networking platforms where users p... for the term #thanksgivingdinner. The search results may show recipes from experts, photos, and tips from other social media users.