Just found out about Writer’s Bloq, which describes itself as follows:
We are a community for MFA and Undergraduate writing students, professors, and alumni to share work, connect with peers, discover new writing, and uncover literary events. At the moment, there are students, alumni, and professors registered from programs including Austin, Brooklyn, Brown, Columbia, Cornell, Harvard, New School, NYU, Stanford, and Syracuse.
Twitter: https://twitter.com/#!/writersbloqinc
(events are all near Columbia University)