today I leaned about wikis.It was a surprise to me to learn how simple it is to contributeto or to edit an article which appears in the wikipedia. You don't need to sign up or to sign in, and you can be anonymous if you wish. I am a bit worried about the reliability of information going into the wikipedia, for example about a specific medical condition. I think wikis can be used for libraries such as - book reviews, event planning, distribution of minutes. I checked out many wikis. It is fascinating.