The next time you get a few minutes, try this and see if it works. If you’re on Twitter or Facebook, type in a search for your blog’s main focus and see if anyone has recent tweets or has started a group page. Communicate with that person or group, but don’t start advertising your blog right away. Introduce yourself to the community of followers or Facebook fans and express your interest in the topic and share some insights at first. Once you have a established a bit of a reputation, then put a brief plug in for your blog and see what happens.