Blogs are not easy to optimise, especially not if you cannot control the code. For example free blogs on wordpress.com don’t come with free access to the CSS and HTML codes of the template: you cannot access your META data and change it as you desire.
Usually wordpress.com or blogger.com blogs have valid XHTML, so you are on the safe side, as long as you don’t insert in your postings elements that mess up the code (like Flash files using the non-valid EMBED tag). Even a simple “copy-paste” from word could cause a HTML mess. So you have to be careful how you format your text and always check your entry with the W3C validator.
While some don’t allow you to change the blog META data, most of the blogging platforms (editors), even the free ones, give you access to the HTML code of each entry. Use them to structure your H2, H3 tags (H1 is already pre-programmed as the general title of the blog). H2 is pretty important because it is the tag that will be indexed and appear in the SERPs. It’s in your best interest to use your blog keywords in it, but also to keep it relevant to your entry.
The title should also be interesting enough to act as “link bait”. Linkbaiting is a commonly used technique (and it doesn’t apply solely to blogs) to attract attention and get other bloggers to link to a certain site.
As far as blogs are concerned frequent posting and rich linking is the best SEO. But SEO is worthless if you don’t have readers. Join me again tomorrow to learn how to increase traffic to your blog and how to enlarge your audience.