Wiki-Wiki-What?

• A wiki, in essence, is a collection of relevant information pertaining to a subject. A wiki is fully open-edit and the concept is that when multiple people contribute, the most relevant information will result. In contrast, a blog is a journal limited to one or a few people. It is not always relevant and is quite often opinion based. They are similar because they both represent a shift in information sharing and the concept of open contribution. The primary difference is the scope and intent. A wiki is for public defining while a blog is for personal declaration.
• A wiki would be wonderful for a group research project, allowing students to pull information from all places and, hopefully, come to the most logical conclusion about the subject matter. A blog would be most useful to provide my personal insight to students as they perform activities within the classroom. It could even be used for further clarification on the assignments then I have given them.  
• The challenge for both wikis and blogs is up-to-date content. With wikis, for information to be accurate, a large number of people must participate.  Otherwise, it becomes too often like a blog, based on a sole (or select) user opinion/s. A blog's biggest issue is activity. The draw to a blog is continued relevant information which personally draws the reader. If a blog becomes stale in updates, visits will stagnate and popularity will decline.
• Content would be the first key.  Without content, a blog or a wiki are both dead.  I would need to gather all of the information I’d like to use on my blog or wiki before I started.