The belief here is that the keywords you use in H2-H6 subheadings are more heavily weighted in Google’s algorithm than words in plain text and that tags are therefore a ranking factor of their own.

In a Webmaster Central hangout, someone asked if it mattered if a page used an H2 heading tag instead of an H1. “A page without an H1 title will it still rank for keywords which is in the H2 title?” ...

Hi guys,<BR>I'm writing a html to pdf converter in Ruby. My problem is I don't know what font size to use when I parse a heading tag such as H1 or H2, etc. I've tried searching for some specifications ...