This really isn't a support request, but your web site made it sound very clear that any message regarding a plug-in will be flushed. (ouch!) But, I did think it was important for you to know about what I was advised to do this morning.
First, I resell Hostgator hosting. This morning one of my client sites had a cron script issue (probably hacked) and HG shut it down. While recovering access to repair the site for my client, I was "advised" of their opinion on some of the plug-ins. Now, I install the WordPress SEO and Google Analytics plugins on all sites I install. Most are simply setup so the client will have it there.
So here's the "feedback" from the HG tech on the WordPress SEO plug-in on this particular site. (Another simple configuration.)
I noticed you are using the an SEO plugin. While many of these plugins are popular, the degree of automation they use causes performance problems for sites -- especially those which have other intensive plugins. Ironically, this can actually hurt SEO, as a slow loading page is ranked lower by most search engine algorithms.
A plugin we recommend instead is Greg's High Performance SEO Pack. This plugin will guide you through proper SEO for your site, and will do it without causing performance issues.
More information about this plugin is available here: http://wordpress.org/extend/plugins/gregs-high-performance-seo/
While you can download the plugin from this site, we recommend installing it through your WordPress dashboard in the plugins section, as this is simpler.
I've been using WordPress SEO for as long as I can remember. I don't know of any performance issues, and of the plug-ins around, Joost is the most active developer of plug-ins I've ever seen.
I won't post the site they're referring to because it still isn't recovered. There are only a few plug-ins and little activity. The owner hasn't kept it updated, so I'm guessing it was hacked again.
I thought it was important to know what at least one of the techs at HG was doing. Obviously, I'm not taking his advice on this one.
Keep creating great tools!