Online social networks can connect you with similar-minded reading enthusiasts, as well as with fellow writers and industry professionals who can be great business contacts.

Goodreads
https://www.goodreads.com/
Free website for book lovers to view other people’s bookshelves, read and write reviews, ratings, join a discussion group, start a book club, contact an author, and even post your own writing.

Shelfari
https://www.goodreads.com/?shelfari_flash=true
Create a shelf full of books you have read or intend to read, review, tag, and rate books, join book groups, and share with others.

LinkedIn
https://www.linkedin.com/home
Social networking site for professionals, where you can view your business contacts and who they’re connected with.

LibraryThing
https://www.librarything.com/
Enter what you’re reading or your whole library—it’s an easy, library-quality catalog. LibraryThing also connects you with people who read similar works.

Twitter
https://twitter.com/
Stay hyper-connected with this micro-blogging service for friends, family, and co–workers who communicate through an exchange of quick, frequent posts.

Buzzfeed
https://www.buzzfeed.com/books
News, videos, and quizzes about current books.