As we all know, WordPress is a popular blog/CMS choice. One of the great things about WordPress can also be the worst. Dynamic is a great way to describe the platform. This is great most of the time, except when you are getting a ton of page views. Every time a page is accessed, its pulls a dynamically created page. That can be very taxing on your server. Thankfully WordPress has great plugin expandability.
The Plugin of the hour is WPSuperCache. This fantastic plugin creates static HTML pages from the WordPress dynamic pages. This allows the server to serve the pages faster and with less load. When matched with a professional heavy duty server, this plugin can serve millions of pages an hour.
It is great when you realize all this stuff, minus the hosting is free! Got to love open source.