If you're on Twitter, here are some of the best hashtags for writers. Simply plug them into your Twitter search box and see all the posts that pop-up. Twitter is a great way to connect with others and get a pulse on what's going on. If you're not on it (don't understand it) and need help, feel free to shoot me an email at firstname.lastname@example.org and I will do my best to get you started.
I will keep adding to this list as I dig:
Definitely #obvious, but enough to get you started! Happy tweeting.