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![This mind-map sums up some of the memes of Web 2.0](http://upload.wikimedia.org/wikipedia/commons/thumb/a/a7/Web_2.0_Map.svg/300px-Web_2.0_Map.svg.png)
In studying and/or promoting web-technology, the phrase Web 2.0 can refer to a perceived second generation of web-based communities and hosted services — such as social-networking sites, wikis, and folksonomies — which aim to facilitate creativity, collaboration, and sharing between users. The term gained currency following the first O'Reilly Media Web 2.0 conference in 2004.