Recently, I ran my site through Screaming Frog SEO Spider (http://www.screamingfrog.co.uk/seo-spider/) and noticed something alarming. Even though I'm entering all of the Meta Descriptions into SEO Ultimate on a post by post basis, this information is not showing up in the search engine listings.
This can be confirmed by doing a google search of the following (blogher '12 mommy riley). As you can see, all of my meta descriptions are nonspecific for these posts.
Also, Screaming Frog confirms that the keywords I'm entering in to the Tags section of WordPress for each post are not being shown as meta keywords. So basically, all of my posts have no meta description or meta keywords.