Blogs are content management systems (CMS) that allow the administrator to add new content to a site. A blog enables the administrator to give commentary or news on a particular subject and make it feasible for visitors to add their comments on the particular post.

Creating a blog within a website has many advantages:

1. It will create fresh website content that will (hopefully) attract repeat visitors and build an online community that will read your blog and post their comments on a regular basis.

2. Being a CMS , new content can be added extremely easily with limited amount of technical knowledge.

3. By adding regular posts (around a blog a day), this counts as adding new content, this allows search engine spiders to crawl frequently.

4. A blog post has its own url that is uncomplicated and makes it extremely crawlable by a search engine spider. For example, the blog post will show www.example.com/blog/this-is-the-post-title.html and not www.example.com/blog/post.php?id=3.

5. When a blog post is created, it is important to try and add a few anchor text, that refers to other blog post or website content. Internal linking within a website is a key part of SEO. Many people assume (due to the fact that the search engine algorithms are confidential) that an internal link within a website is one of the most essential aspect of search engine optimisation.