Are wikis an effective means of communication? Why or why not?

ISTB01 Tutorial Questions ― I believe wikis are not an effective means of communication because it allows anyone and everyone with access to a computer and internet from every part of the world to comment, change, add, and get involved with what is on the page. It sounds great and all, to get users to involve themselves in topics but it creates uneasiness on how reliable these wikis are, because anyone can post their comments and opinions and claim them as facts. It's usually the first thing that many people look at when[...]