I recently answered a question over at WordPress Answers, Stack Exchanges new WordPress question and answer site, about best practices for using a caching plugin with a shared host.
Not all WordPress users are able to host their blog or website on a private server or VPS and need a way to speed up their websites. There are a few great WordPress caching plugins like WP Super Cache and W3 Total Cache. Both plugins are very popular, well supported by their authors and do a good job of caching.
WP Super Cache is developed and supported by Donncha O Caoimh who is a member of the Automattic team and a core WordPress contributor.
W3 Total Cache was originally developed for Mashable.com by their CTO, Frederick Townes .
W3 Total Cache is much more than a caching plugin. Along with page caching, W3 also does object caching, database caching, minifies and combines css and js files and also has built in CDN (Content Delivery Network) support. This is the only plugin available that tackles all the best practices of High Performance Websites
