Blog posts are generally used to discuss a topic or to give information about a specific subject, and promote interaction with readers. They can be a commentary or personal opinion, or part of online brand advertising for an individual or company. If you are writing copy for a blog this will most likely be used for marketing purposes.
Articles can cover a whole range of subjects, from news and general interest to specific topics. Generally the purpose of an article will be to persuade or inform the reader and encourage them to take some form of action, rather than simply to entertain them.
A press release announces to the media something that is newsworthy. Often, the aim is to attract favourable media attention for a company or individual, while providing publicity for any products, services or events.
A white paper is an authoritative guide that aims to help readers make a decision, understand an issue, or solve a problem. There are three different types of white paper – backgrounders, which describe the benefits of a product or service (used to supplement a product launch or similar), numbered lists, which deal with questions or give tips and points (used to get attention), or those that give solutions to a problem.
Product descriptions include the vital information that consumers need to know about a product, together with compelling reasons why they should buy it.
A review is an evaluation of a product or service, and can be written either from a professional or consumer perspective.
A good web page is easy to navigate, addresses the intended audience and helps them to gather relevant information quickly and easily. Commercially focused pages contain USPs (Unique Selling Points) and a compelling call to action.