Know-How Exchange : Social Media

We're a Boston-based website that's doing a cool event (it's about Bob Dylan and features the great novelist Rick Moody and superb poet David Lehman) in New York City--Jan. 19--and we need to get the word out as quickly as possible. Problem is: (a) we're so far away from New York that (b) we're insufficiently plugged into NYC arts/literary circles. Any suggestions of how we can use social media to get the word out? We've written to a number of New York-based publications and literary bloggers and have had a few responses, but we need to do much better. If you've got some specific ideas, let us know. Thanks.