The articles you write today will contain outdated information months or years from now. You could always go back to them and update each of them on a regular basis. If you do so, WordPress will maintain a field called post_modified to show when the post was last edited. Don’t want your updates to be recorded that way? Stealth Update is just the plugin you need.
Stealth Update is just the plugin you need to update your posts without having to worry about changing the post_modified field. This is useful if you want to make formatting changes but keep your content looking the same. You don’t have to do this for every post. Just check the appropriate box next to the ones you want to use this for, and the rest is taken care of.
Stealth Update lets you make small changes to your posts without changing their post_modified post. It is simple and does what it promises.