Tags: Use of relevant tags is important from the SEO perspective. It helps the search engine track your post based on the tags you use.
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.
Listicles are for E-commerce bloggers. Write the top 10's for your products/services. It could be benefits, features, place or anything else. It helps your audience grasp information quickly.