Although nowadays blogs and articles can be both marketing driven, more often, articles are more effective. In terms of web promotion write up, articles are being read more than blogs. They re-enforce what you are selling by giving your readers the information they want to know. Usually, potential customers do not just search for products or services and immediately purchase them; they are usually searching for information about the products/services they are going to buy. Articles are the best medium for to satisfy the customers in terms of information. In the end, they would likely buy or even refer the product or service to the rest of the people they know.

There is a prevalent perception that an article is carefully written than a blog. Since there are no governing rules for blog writing, one can write without even be aware of misusing a word or committing some grammatical mistakes as long as the message is clearly presented. In article writing, one is bound for the guidelines of quality writing. So, in terms of authority, articles win out blogs.