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open directory project	(ODP) See DMOZ. One of the oldest and most comprehensive human-reviewed directories on the web.
image link	A link from an image or picture.
usp	(Unique selling proposition) The key factor distinguishing a service or product from its competitors.
index	A huge database of all the content search engine crawlers have discovered and deem good enough to serve up to searchers.
baidu	The most popular search engine in China, Baidu was founded in January 2000 by Robin Li and Eric Xu.