An interesting question, and is there a difference. A blog is a lot easier to get started via tools such as wordpress and googles blogger. Both tools enable the user to easily create standard web pages within the structure as well as have the power of using blogs as well.
You can use both tools from google and wordpress to create a site and it enables you to point a domain name at the site.
Should the blog run on your domain or a different one so you end ip using www.domain.com/blog or use a subdomain.
Personally if it’s a personal blog run it away form your company site. If not then get it installed on your domain, the links in from users will provide a of more benefit in the long run.
