SEO Update

I've been tweaking my theme recently to make it more search engine friendly and it seems to have worked as I'm getting a few hits direct to posts from Google searches. In case anyone is wondering I've just made sure the HTML meta tags always have values (using the post excerpt & tags) and that the post title comes first in the page title if applicable. I know there are some plugins I could have used to do the same job however I learnt quite a bit about Wordpress themes in achieving my goal. I'm more familiar with Wordpress and themes now than I was before anyway.

Does anyone have any other SEO tips they can suggest?