There is great value and exposure for bands that promote events on social media, specifically Facebook. You have the potential to reach several hundred or even thousands of users if you plan correctly.
There are no excuses- with social media and all the tricks (hashtags, live video, geo-filters, check-ins, etc.), your event should practically be a trending topic in your area. You should be embracing #FOMO (Fear Of Missing Out) to the fullest. Here's how.
You have always been able to head to Twitter to find out what you needed to know before national media picked up stories, but the interaction is lacking. Greatly. The worst offenders seem to be social media marketers.