I've been wanting to personalize my site for years. AMR Personalise has finally made it possible. I wanted more than just a personalized email program. Of course AMR does email but it also lets me insert the user name in any page or post content. THAT'S what I wanted. It really brings the logged in user into the "thick of the action" in the content.
It says it's been tested up to WordPress 3.8X but I'm using 3.91 and it works perfectly. It's brain-dead simple and very intuitive. Go for it; you'll love it.