I've noticed that H1 tags don't have nearly the same effect as lots of other things - like back links and body text - but it's so easy to wrap <H1></H1> around a few key words the return/time ratio makes it very worth doing, IMO.
You can easily integrate header tags with css to make templates quick and easy to edit like this:
Code:
h1 {CSS_SETTINGS}
h2 {CSS_SETTINGS}
h3, h4 {CSS_SETTINGS}