Marc fest recently contacted me to respond to one of my past posts regarding Chris Pirillo. After that he mentioned the new project he's working on: Our Notepad.com.
“If you want to you can also mention my latest service, www.OurNotepad.com -- just launched this weekend. You'd be the first to mention it. It's designed to be the simplest collaboration tool on the Web. See http://www.ournotepad.com/help.html for more.”
it sounds cool, but I can't honestly say I'll use it for something. Right now it's still a bit to cumbersome to use. But you may think differently, or, as newsgroups posters say “YMMV” (your mileage may vary).