[quote=Chenzor]
What's this Piratepad thing? Do I type in it and you get to see what I post in there? Like a .txt document in DropBox?
[/quote]

Piratepad is basically a document that gets updated in-real-time. Meaning all edits made by each participant will be seen by the other people as it is being typed in. It's an easy way to do collabs because the RP'ers can post IC back to back to see how one another will respond =)