Social media has become a major resource for every stage of event promotion. Here's an infographic from tollfreeforwarding and gryffin media explaining how organizers and attendees can utilizes social campaigning to get the most out of their event.
Some key takeaways:
Start with organic promotions: Share event-related blog posts, press releases, images and fliers or all your social profiles. Be sure to mention attendees, influencers and other organizers to attract more attention.
Advertise with paid promotions:
Engage attendees with Facebook ads
Organize your outreach on Twitter
Boost visibility with Google Adwords.
There's more in the full graphic take a look.