AVOID creating your own random hashtags; this is an ineffective way of using hashtags. If you would like to create your own hashtag, be sure to consistently use that hashtag in ALL of your posts to build momentum behind your hashtag. If you want to create a hashtag for a multi-unit campaign (such as Welcome2Mason or Giving Day), be sure to communicate the hashtag and inform all parties to consistently use the same hashtag in all posts.