Blogs, while older and substantially more mainstream than most social media platforms, are still an important form of social media in their own right. Blogs can play a perfectly good role in email marketing and other tactics. And the can serve many business goals and respond to the questions target audiences have.
They are more in depth than Twitter and more powerful for spreading ideas than Facebook updates. Furthermore, they serve as more important ‘thought leadership‘ tools than a mere LinkedIn profile or online resume.
Blogs are social media platforms reduced down to core components — a dedicated audience, your thoughts, and a small but significantly more powerful audience than your Twitter followers or Facebook friends. While many people pass them over entirely, blogs are the most powerful form of social media around.