There are blogs that I have seen on other sites that allow you to a desciption of what blog is really all about in a much smaller font. This is part of the blog title box that always remains at the top of the page.
I cannot work out how to do this with my WordPress blog.
Blog title (large "themed" font): Tim Henman
Descriptive text (smaller text just below): This blog is about Tim Henman and why he has continued to frustrate his fans at Wimbledon over the years...