Universo Online (Portuguese for "Online Universe") (known by the acronym UOL) is a Brazilian web content, products and services company. It belongs to Grupo Folha enterprise. In 2012, UOL was the fifth most visited website in Brazil, below only Google portals (Google Brasil, Google USA, YouTube) and Facebook. According to Ibope Nielsen Online, UOL is Brazil’s largest internet portal with more than 50 million unique visitors and 6.7 billion page views every month. UOL is the world's largest Portuguese speaking portal, which is organized in 42 thematic stations with more than 1,000 news sources and 7 million pages. The portal provides website hosting, data storage, publicity dealing, online payments and security systems. It also holds more than 300 thousand online shops, 23 million buyers and 4 million people selling goods and services in its portals More information...

According to PR-model, is ranked 74th in multilingual Wikipedia, in particular this website is ranked 3rd in Portuguese Wikipedia.

The website is placed before and after in the BestRef global ranking of the most important sources of Wikipedia.

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