WIKI
A wiki website is one that allows anyone to make changes by adding or deleting text, images, etc. on the site.
The word is an abbreviation of the Hawaiian word: "wiki wiki", which means come quickly or hurry.
One of the best known wiki sites is wikipedia.
The good thing about wikis is that in theory those who know about a topic can easily share their knowledge with everyone; the down side is that there is often no way to tell if the information on a wiki site is valid.
BLOG
Short for Web log, a blog is like an online journal or diary. Often they contain text, images, sound (podcasts) and video(vlogs).
Blogs can be set up to allow anyone to edit or only a certain group.
It is possible for anyone to make comments about the blog entries.
If you find a blog that you really like you can subscribe to it.
This means that every time it is updated you are told about the update through a special piece of software called an aggregator.
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