Hackpad is a website that allows users to create their own articles online and expand the encyclopedia with their own contributions. 

However, unlike Wikis, Hackpad is much easier to use, less strict and a lot faster. 

Wikis have the advantage of allowing a large selection of pages or projects to be organized in one place, but if you want to run an online meeting where anyone can write without passwords or access emails, etc. ... this is a great tool.

View How to use Hackpad on Hackpad.

It can also embed other media, see  Hackpad-Rich-Media-Embed-Demo