One little update to my WordPress SEO blog post way back in November 2009 is that you should update the settings in your blog to automatically notify Google's blog search when new posts appear.
To do this...
Just "update"
Now publish a new post and go to http://blogsearch.google.com/blogsearch and search for blog posts with your own blog's web address by typing this into the search field...
blogurl:www.yourblogurlgoeshere.com/blog
You'll be surprised how fast it gets indexed. That's what Google Caffeine was all about... making things reviewed and presented in the search results much faster.
Now that instant search is a reality things are going to get very interesting for everyone actively trying to rank higher in Google.