I have just created the custom html plus module to be able to add text to a component view and override the page title, meta description and meta keywords. I also added the functionality to add extra css and general code to the head section.
Normally there is no option in a menu item to add a description. With this module and a simple template override you can add introtext, footer text or text anywhere in the component and override the page meta tags and title.
You can read the full description on the download page.