QUOTE(Jill @ Oct 24 2009, 09:58 AM)
Try it. You'll most likely not notice a difference as far as search engines are concerned.
I have not got around to setting up any tests yet, still dabbling with some tech/semantic structure. Just curious I visited the blog of a friend who is a master blogger. For what it's worth the structure of his site seems to break the rule book. His home page includes both a first h1 tag about the site, then for each blog entry, they are all titled and surrounded with h1 tags, so more than 40 on the home page.
If you select a blog entry it's a little better as there are only 2 h1 tags. Yes this may be incidental in fact to search engines because this blog is so highly touted, but this is how it is just the same. The reason I'm looking into this is because I have a blog component within my site and by default (Joomla) it doesn't provide flexiblity for the blogger to control the semantics. It is presumtuous.
In my way of thinking the main blog list page should do something like set:
h1 - allow you to configure an h1 for the blog title
h2 - use something like h2's for blog entry titles
On blog entry pages, grab that blog entry title and here it becomes the h1, meaning that depending on page type the Page Title is interpreted as either an H2 or an H1. Then of course when in writing the entry you would need to be careful of placing H2's in the entry paragraph where they might look odd on the page or break a column width, etc. Details....