Definition: A word or phrase (without spaces or symbols between words) preceded by a "#.' Using hashtags: You add a hashtag anywhere in a tweet to categorize your message. If your account is Public, the tweet is now visible to anyone. Clicking on a hashtagged word in a tweet will pull up other tweets with the same hashtag. Don't #spam by #overusing #hashtags--just use what's relevant to the topic and adds value. For more tips, visit here. How it works: Twitter aggregates tweets with hashtags into a stream. Imagine standing at the edge of a rushing river. The hashtag allows you to reduce the flow of information by pulling out the messages that have been tagged. @MrDeal24 and @hoosier_teacher have included the hashtag #INeducoach in their tweets. Even though there are dozens of tweets in the Twitter feed, by clicking on the hashtag, I pull up just those that are relevant to this area of interest.
Who creates hashtags? Anyone can start using (or create) a hashtag, but it is a smart practice to first search the hashtag to see if it's already in use. Below are hashtags that different educators or schools have started. There are many good examples of effectively building community around a hashtag.