Although they are not
used very frequently any
longer HTML heading tags can
help improve your listings
in the search engines too.
Since they are "headings"
the search engines figure
that they are very closely
related to the content of
the page that they appear
on. So, just like with all
of your other optimization
efforts you should include
your most important keyword
phrases in heading tags on
your page if you can.
What they look like:
HTML heading tags have 4
different sizes and are
formatted as you see below.