Whether you a hosting a march, a conference, a fundraising gala, or any other event, you need to use a hashtag that is promoted well. People want to be included in the conversation -- that's why hashtags are used to begin with.
In the past 72 hours, the hasthag #RIPTweetDeck has been making the rounds on Twitter. It circulated in light of news that Twitter is shutting down its TweetDeck applications for iPhone, Android and AIR TweetDeck. But TweetDeck's not dead yet. Far from it.
Social media is a double-edged sword, and this applies both to engagement and listening equally. Social CEOs are applying this type of thinking not just to themselves, but to their entire organizations.
Since social media is here to stay, event organizers who truly embrace the notion of the greater good, which is the purpose of all of this social stuff anyway, can enhance the experience by establishing and promoting twitter hashtags and handles.