Respond when someone likes or comments on your post. Visit their blog and send your comment love. Courtesy brings in more readers and friends.
E-commerce bloggers must carefully write keeping their audience in mind. Everything you post on your blog will speak for your product or service. Your interaction with bloggers in comments and otherwise will give you a direction.
Presentation is as important as good content. Have attractive pictures, fonts, etc. on your blog to hook the reader.