Forum Moderators: mack
When it comes to the do's and don'ts of html, this is my reference of preferance: http://www.w3.org/MarkUp/
I was looking specifically at H tag documentation, and according to the document you can use H1 more than once.. eg. H1 H2 H1, but it's NOT recommended to skip a header.. eg. H1 H3 H1.
Hope that helps
grandpa