QQLabs is a site to inform users about upcoming products from the Tencent laboratories, as well as an opportunity for users to offer feedback about Tencent products. It was launched late 2006 and since then the labs page has seen a series of product announcements. It offers users the opportunity to respond to these announcements (although all comments first have to be approved). So far Qbar, QQVideo, Taotao, Shuqian and many other products have used the site. 

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Chinese articles, with the exception of one article written by me. It is well worth to read through the product announcements though to stay up-to-date on what Tencent is doing. You can also subscribe to the RSS feed, so you don't have to check the site manually everytime.