50 things you can do to speed up your blog [WordPress Checklist] Shared Hosting High CPU Usage
Download my Checklist of what I "Automatically" do now if a site is peaking (on shared hosting)
Tag XML-RPC
My Top 30 WordPress Plugins
Here is an overall list of Wordpress Plugins that I install fairly regularly across a lot of my sites and client sites.
Best Site Protection WordPress Plugins
Site Protection Wordpress Plugins that I use (why I use it, and where I use it)