not8 is a platform that allows users to leave virtual sticky notes on live websites, facilitating team product reviews and user feedback collection. With just two simple steps, users can activate the extension on the desired webpage and leave their notes. These notes can then be easily shared with teammates by pressing the "Share" button and sending the link. Founded by Bob Brauer, not8 provides a convenient solution for enhancing collaboration and communication within teams working on website development and design projects.