What is Wikipedia?
Wikipedia is an online-based encyclopedia that anyone can edit. Yes, you read that correctly. Anyone, whether he has a registered account or not, can edit Wikipedia. As of September 2010, Wikipedia has over 16 million articles in 270 different languages. Any edits made in Wikipedia is viewable to the public and can be removed. Wikipedia was officially created in January 15, 2001. All Wikipedia articles are licensed under the Creative Commons Attribution-Sharealike 3.0 Unported License and the GNU Free Documentation License.