Lorna wrote a post back in March outlining the benefits of installing the all in one seo plugin for WordPress (note: it isn’t available on wordpress.com). If you have chosen to go down the route of self hosting your blog, you will want to install some shiny new plugins. Now, while there are many great ones out there, there are also some not so great plugins, and be aware that by installing the wrong plugin, you can compromise the speed at which your site loads.
Our advice is to choose quality over quantity. Start with the all in one as recommended by Lorna, then test new ones until you find the best for your site that doesn’t compromise your speed.
To help you determine which plugins are slowing down you site, check out the P3 plugin on WordPress.org. Often times, WordPress sites load slowly because of poorly configured plugins or because there are so many of them. By using the P3, you can narrow down anything causing slowness on your site.