Wiki’s are websites that can be edited collaboratively by groups of people.
This is particularly useful as a centralized space to document planning processes, as users can make sure that the most up to date version of the plans are in one place. This avoids the confusing situation when many different versions of a document are emailed to many different people.
Here is the classic ‘Wiki’s in Plain English’ Video, which explains Wiki’s much better than I can.
Creating a Wiki account
You can find sign up for wikis at the following providers.
You create a wiki account as you would do for an email or blog.
Once you have an account you can create a Wiki & invite other people to use it.