Why It Matters
Two developers with equal skills. One has a strong online presence — a blog, GitHub activity, Twitter engagement. The other has nothing. Who gets the better job offers, speaking invitations, and consulting opportunities? The answer is obvious.
Start Small
You don't need 10,000 followers to benefit from a personal brand. 500 engaged followers in your niche is worth more than 50,000 random ones. Write about what you're learning. Be consistent. The audience follows.