You may have noticed if you're working on your novel you have less time for social networking.
I have noticed, with a little more social networking, I have less time for working on my novel.
Frustrating, isn't it?
It's a balancing act. For a time, novel writing may be more important for you. Then, when it's done, you can go wild with the social stuff. (And, later, use it all to push your book, too.)
Just keep writing.