I’ve come across a couple post that I found very useful in understanding how to optimize my WordPress blog.

DYI Search Engine Optimization
Soup to nuts advice from Lorelle on WordPress covering the basics of optimizing code, keywords and extending through promotion and analysis of site traffic and competitors.

Ultimate WordPress SEO Tips
Nifty coding tips for better permalinks, page titles and post titles from seventeen year old(!) Fintan Darragh

Are there other sources of useful advice on SEO for WordPress that you would recommend?