Wikispaces versus blogs

What is a Wiki?

A wiki is a website that allows multiple users to create, modify and organize web page content in a collaborative manner.

 

What is a Blog?

Blog is an abbreviated version of Weblog, which is a term used to describe Web sites that maintain an ongoing chronicle of information. A blog is a frequently updated, personal Web site featuring diary-type commentary and links to articles or other Web sites.

Differences:

 

WIKI	BLOG
Multiple Authors	Usually a single author. Sometimes can have multiple contributors
Pages ·                             -    Edited ·                             -   Changed ·                             -  Added	Chronological Content ·                              -     Posts/Entries ·                              -    Comments on Posts ·                              -   Responses to Comments
Edited by a group or team	Author posts, user comments
Knowledge Sharing	Opinion Sharing
Links to other Wiki pages	Links to outside
Grows rapidly, at all hours of the day	Grows slowly, one post at a time
Articles constantly change and are continuously updated	Each post becomes stale over time
Discussions can take place on pages or in the discussion forum	Discussions take place in the comments of a post, typically approved by blogger.
Many-to-many communication	One-to-many content

 CONCLUSION

There isn't any website better than the other. The advantages and disvantages depends on the use that you want to do with this tools.