It's not that most people don't need the post/page/category ID, or even that it can be found by hovering over the name. It's that nobody will ever need it in a bare installation of WordPress. The only time anyone will ever need the ID number of a post/page/category is when a theme/plugin asks for it, or if you're creating/editing a theme/plugin. Just because you go and get some StudioPress or iTheme theme that asks for a category ID or a page ID, that doesn't mean that WordPress should have it in there. If you know enough to create a theme or plugin, you should know enough to be able to figure out the ID of what you need. If a plugin or theme needs it, it is the responsibility developer of the plugin or theme to supply this information. What if I write a plugin or theme that needs a post meta or user ID number, should WordPress supply those in an additional column as well? There are 9834589 different types of unique ID numbers for the various types of data in WordPress. NONE of it will ever be needed by a user unless they're making or editing a plugin or theme, or the plugin or theme asks for it. .-= ´s last blog ..Twitter Updates for 2009-06-12 =-.