While Match.com and eHarmony are two of the most popular dating sites in the U.S., China's QQ.com Love is the No. 1 ranked dating site in Asia.

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But China's QQ.com Love ranks highest in Asia, Meetic and be2 are No. 1 and 2 in Europe and Amigos.com is second only to MSN in Latin America, according to comScore.

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That's thanks to products such as its QQ instant messaging service with over 700 million users, which gives it huge marketing clout.

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