# Twitter

Twitter is an online social networking service that allows users to send and read 140-character messages called “Tweets”. The site allows the registered users to read and post tweets and lets them access it through the desktop computers or the mobile apps.

 Twitter was introduced in 2006 and the service rapidly grew worldwide with over 500 million registered users as of 2012, generating over 340 million tweets daily and handling over 1.6 billion search queries per day. The site was one of the ten most visited websites and has been described as “the SMS of the internet” in 2013.

Twitter gains immense popularity over the web and has turned into ultimate piece of information because of the presence of the news organizations, politicians, and other industry-specific experts on the site.

# Taobao.com

Taobao.com is a Chinese website for clothing, accessories, jewelry, food, electronics, and more which is similar to eBay and Amazon operated by Alibaba Group. Founded by Alibaba Group in 2003, it facilitates consumer-to-consumer retail by providing a platform for small businesses and individual entrepreneurs to open online retail stores that mainly cater to consumers in mainland China, Hong Kong, Macau and Taiwan.

# Baidu

Baidu is a Chinese web Services Company headquartered in the Baidu Campus in Haidian District, Beijing. It offers many services, including a Chinese language search engine for websites, audio files, and images. Baidu also offers 57 search and community services including Baidu Baike, an online collaboratively built encyclopedia, and a searchable keyword-based discussion forum. Baidu was established in 2000 by Robin Li and Eric Xu.

Baidu is one of China's most popular search engines. It employs thousands of China's best engineers to continually update the quality and speed of its search engine.

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