AOL arbitration and business expansion
After AOL (America Online) bought ICQ in 1998, the company filed an arbitration against Tencent with the National Arbitration Forum in the United States, claiming that OICQ's domain names OICQ.com and OICQ.net were in violation of ICQ's trademark. Tencent lost the case and had to relinquish the domain names. In December 2000, Ma changed the name of the software to QQ ("Q" and "QQ" used to stand for the word "cute").
After the AOL case, Ma decided to expand the business portfolio of Tencent. In 2003, Tencent released its own portal (QQ.com) and made forays into the online games market. By 2004, Tencent became the largest Chinese instant messaging service (holding 74 percent of the market), prompting Ma to list the company on the Hong Kong Stock Exchange. After the company raised $200 million in June's initial public offering (IPO), Ma quickly became one of the richest people in China's telecom industry.
In 2004, Tencent launched an online gaming platform and started selling virtual goods to support the games published on that platform (weapons, gaming power), as well as emoticons and ringtones.
At Ma's behest, Tencent launched in 2005 the C2C platform Paipai.com (拍拍网), a direct competitor to e-commerce giant Alibaba.
Mimicking Microsoft, Ma created two competing teams of engineers in 2010 and charged them with creating a new product. After two months, one team presented an app for text messaging and group chat – WeChat – which launched in January 2011. As of 2015, WeChat (微信, Weixin), is the largest instant messaging platform in the world, used by 48 percent of Internet users in the Asia-Pacific region.
Other diverse services provided by Tencent include web portals, e-commerce, and multiplayer online games.[8] Online games such as Legend of Yulong and Legend of Xuanyuan boosted revenue by more than half, up to US$5.1 billion, with a US$1.5 billion profit margin.
In December 2015, Ma announced that Tencent would build an "internet hospital" set up in Wuzhen that will provide long-distance diagnoses and medicine delivery.