Top Hashtags For Headlines

A hashtag, introduced by the number sign, or hash symbol, #, is a type of metadata tag used on social networks as social media and other microblogging services. It lets users apply dynamic, user-generated tagging that helps other users easily find messages with a specific theme or content. Users create and use hashtags by placing a hash symbol in front of a word or unspaced phrase in a message. The hashtag may contain letters, digits, and underscores.[1] Searching for that hashtag yields each message that someone has tagged with it. A hashtag archive is consequently collected into a single stream under the same social media.[2] For example, on the photo-sharing service , the hashtag # allows users to find all the posts that have been tagged using that hashtag.