Google Press releases are not only great ways to spread the word about any announcements your business might have. They can also drive traffic, particularly from search engines. This is not news, but it’s a commonly overlooked fact.
http://www.webpronews.com/topnews/2009/12/19/how-press-releases-can-be-great-for-search
In an SEO Monopoly a company is attempting to control multiple sites on the front page of the search results. Each of these sites have some way of highlighting the parent company, usually, through the form of posts or text ads.