Since WordPress 2.6 post revisions have been included, which means every save of a draft is saved as a revision of that post. This is a great feature for those working in a collaborative environment with multiple editors and is a way of tracking changes, but for those of us who blog alone, it is an unnecessary feature that adds a lot of additional data that will really increase the size of the WordPress database.
There are two ways to turn off this feature so that post revisions are no longer used nor stored in the database. One is a simple change to your wp-config.php file and the other is a plugin.
