Include data in blog posts. It makes the post more interesting and informative to read. It makes people stay longer on your pages and even share your content.
Acknowledge and appreciate your readers, especially regular readers by replying to comments and visiting their blogs.
E-commerce bloggers can gradually choose to write curated content from other websites/blogs. That always helps because a buyer will generally not spend much time surfing. He/she will appreciate it if you provide most of what they are looking for.