O kosmos tvn megalvn epixeirhsevn anakalyptei to wiki...
....
When software developer Nicholas Pisarro Jr. saw his first wiki late
last year, he knew it was unlike any Web site he had ever seen. On the
site, a free online encyclopedia called Wikipedia, thousands of
volunteers had written a breathtaking 500,000 articles in 50 languages
since 2001 -- all thanks to the defining feature of wikis. To
contribute, all they had to do to was click on an "edit this page"
button and start typing.
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http://www.businessweek.com/magazine/content/04_23/b3886138.htm