This is one of the plugins that belongs to my special collection. I use it on Joomla 1.5. It gives what it says. If you a dealing with large sets of articles to be presented as blog category, you can rely on Read less text to handle intros for you. Whenever you need to change yur layout, you can adjust your intros in one single place using powerfull configuration and without need to open single articles and adjust your read more tags. I was having some light missunderstandng with the config interface, but nothing to be depressed. My fault. Kudos to author.