This could be very useful for support and content teams of SaaS products. “A service for your website that makes it surprisingly easy to collaborate in real-time…TowTruck lets users communicate, co-author, co-browse and guide each other.”
IS one of your clients running into issues with a site you built for them? Instead od asking them a bunch of questions, point them to this site and have them e-mail you quickly e-mail you key browser/platform information. I wish this existed when I was doing client work.