WordPress.COM or Wordpress.ORG
If you are considering having your own blog or website, you might want to check out WordPress — a content management system that lets you maintain and manage your site. This means you can write posts, add pages, upload images and videos, create categories, build links, and much, much more.
But what may confuse people is that there are 2 systems: WordPress.COM and WordPress.ORG. Although both do basically the same think, there are some major differences. While .COM is free (there are premium themes and levels of support available for a price) and very easy to use, .ORG gives you far more control over you site, content, and features. You do need to obtain a domain name and host for your WordPress.org site.
What version to use?
If you are a casual blogger, .COM may be the choice for you. However, if you have a company or you are a serious blogger or you are selling online, .ORG is the way to go.
Read this article and learn more
There is an excellent article on the WP Mayor site that goes into a deeper explanation of the differences between the two system. It is a must read if you are considering a WordPress website and not sure which direction to go. You can read the article here.