One things that blogs lack is an easy way to add an introduction paragraph to the beginning of the index page. However, there are may solutions, including Adhesive.
Adhesive allows the user to create a ‘sticky’ post that will always show up as the first post on the homepage. This can then be used for an introduction/welcome paragraph that gives your visitors a bit of an explanation of what your blog is about.
This is especially useful for any blogs that function as a full fledged website. Giving the users a short explanation of what the site is about can be much more informative than just showing the last 10 posts.