Protonotes are notes that you add to your prototype that allow project team members to discuss system functionality, design, and requirements directly on the prototype. You can think of it like a discussion board/wiki in direct context of your prototype.
Mark up websites, graphics, and photos, or start brainstorming on a blank canvas. Browse the web with your friends or make that conference call more productive than ever. No plug-ins, downloads, or firewall voodoo - it's all here, ready to go when you are. Browser-agnostic, user-friendly.
The First Little Piggy would have built using Wordpress.
After a few weeks, the whole thing would have been hacked and turned into a spambot for some Russian spam king.
The Second Little Piggy would have hired a development company to build with Drupal.
After a few months, the whole thing would have been covertly outsourced to india, delivered six months late and three times over
budget finally collapsing under its own weight.
The Third Little Piggy would have hired consultants to help build everything in the cloud using API services.
After a few years, the whole thing would have become so complex he would need to hire the Wolf just to find his fucking house.