They are all equally important. A portion of your market lives on Facebook, a portion of your market lives on Twitter and so on. Instead of revamping your personal Facebook page, why not create a separate page dedicated to those only interested in the information you provide on your blog? Your blog readers might not be interested in knowing your day-to-day personal updates and that's why they don't join your Facebook or Twitter feed.
Have dedicated pages for your blog and only your blog. You can then intertwine everything and not have to worry about the issues now. You'll get more "Likes" and "Retweets," ultimately building your market.
Michael Terry | SquareType
info@squaretype.com
www.squaretype.com