Poets, essayists, and novelists on Social Media (this is a list generated by my students of writers they admire and follow on social media for an essay assignment in my composition class)
Dan Abnett: Twitter
Sherman Alexie: Twitter
Mitch Albom: Twitter
Laurie Halse Anderson: Goodreads
Jami Attenberg: Tumbler
Steve Berry: Goodreads
Kate Brian: Twitter,
David Brin: Google+
Michael Chabon: Facebook
Stephen Colbert: Twitter,
Malorie Blackman: Twitter
Ellen DeGeneres: Twitter,
Sally Deskins: Tumbler
Sarah Dessen: Twitter,
Janet Evanovich: Facebook
Ryan Grim: Twitter
John Grisham: Facebook, Goodreads
Chelsea Handler: Twitter,
Nick Hornby: Facebook
E. L. James: Twitter, Facebook, Goodreads
Mat Johnson: Twitter
Tayari Jones: Twitter
Amy King: Goodreads (coordinates the group !Poetry!)
DJ MacHale: Facebook
Rachel Maddow: Twitter
Gabriel Garcia Marquez: Facebook
Cormac McCarthy: Facebook,
Robert Morris: Twitter
Dave Pelzer: Twitter
Jodi Picoult: Twitter, Facebook
Christopher Paolini: Twitter
Rick Riordan: Twitter
Philip Roth: Facebook
Nicholas Sparks: Twitter, Facebook, Google+
Cheryl Strayed: Twitter,
Ned Vizzini: Twitter
Scott Westerfeld: Twitter
Other social media sites
Linkedin, LibraryThing, Red Room, Gather, She Writes, Goodreads, Pottermore, Redlemona.de
Groups of writers, poets, and readers on Social Media
Goodreads