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.
An interactive style of writing will help you gain readers, but steer clear of SMS lingo if you want to be taken seriously.
Be clear about your goals for blogging. Maintaining a blog is laborious. And your goals will keep you motivate!