A blog is the best means to enhance the site's page rank. It has many valid reasons. Those reasons seem to be the basic ones but generally we ignore those points. The very first cause of the enhancement of the sites Pagerank is that a blog can easily be added to an existing website. Many off-the-shelf blogging tools can be imported directly to your site. These tools can be easily modified according to the requirement of the site. A blog of the site can be set up as a free site also.

The second and the very valid reason is that a blog needs the updates frequently and these updates give the blog a fresh and the new content for the site and this attracts the natural and the unreciprocated linkers towards the site. They bring valuable Page Rank transfer, along with fresh visitor traffic.

Now the question is how should the content be? The content of the site should be sufficiently attention grabbing and informative. Then there are the possibilities of two types of blog links. One are the home page permanent link. The other is the themed link from a blog post. That themed link will slide off the home page, but will bring Page Rank from an internal page. Bloggers routinely read other blogs and link to their selected posts, passing along valuable PageRank as a matter of course.

Now it seems that google has a thought to be give liability to the reciprocal links on many static websites, especially link exchange pages. On blogs, that accountability does not appear to be evident. Because blog links are heavily reciprocated, any penalties would show up quickly in a reduction of blog backlinks. That does not appear to be the case. Whenever we see the back links of the site we can see many of the reciprocal links. That's why blog is the best method to place on a site.

A quick glance at any number of blog backlinks will display many reciprocated links. One reason for that may be the fact that blog links are almost universally placed on the home page. Another is bloggers; in general, make link trades with other bloggers who write about the same theme. The on page text usually contains similar content, and often the same keywords, in both exchanging blogs.

The blog section of your website will add PageRank very quickly, often achieving a PR4 or PR5 within only a couple of months of existence. You can link that page, to any pages of your existing website, and provide that page with a PageRank boost. This is especially helpful if you are in a highly competitive keyword area.