@rowtc2 - what made the idea of H1 tag fall into place for you? Any special details about how you ended up adding it?
The website was created by a programmer without SEO or usability input. I have studied many lists with ranking factors and implemented on page.
When i have tried H1 it was looking ugly in browser without CSS formatting. i have used html font size for titles in content, because in that time i didn't know CSS.
I was busy with some penalties and in time has recovered and doing well after hard work on content and links.
6 months ago, reading often on forums about this tag, i have reminded to implement it. For each widget i have 2 pages: "red widget keyword1" and "keyword2 red widget". Added H1 on these pages and traffic has increased constantly in next period better than periods before. Also i have applied this on my brother's website with the same good effects. I have 30k visits per day.
There are many simple pages with useful informations, made without SEO knowledge and deserve to be in results. An amateur can see if his page is not relevant in browser like other internet pages, if description of his page is not relevant in search results etc and can take measures. But H1 is hidden, is for search engine, like keywords. He can add font sizes with the same look.
Now i think H1 important for people with disabilities, who can't see and helps them to surf webpages. Also, is an instrument for webmaster to tell Google the page structure (after H1 implementation i have added H2,H3 with no significant effects :) ).