It is no big secret that the social media can be put to good use.
I know of a blogger who uses Pinterest to help promote her blog.
After all, the more people who know about your blog is the better chance of you having an increased readership.
Do you use the social media as an avenue to promote your blog? If the answer is, “No, ” it wouldn’t hurt to do so and if you simply don’t want to, I would respect your decision and not think differently about you.