Amazon
Capitalization: $ 198 billion
Active users: 270 million
The cost of a user: $ 733
Alibaba
Capitalization: $ 217 billion
Active users: 350 million
The cost of a user: $ 621
Ebay
Capitalization: $ 71 billion
Active users: 152 million
The cost of a user: $ 474
Capitalization: $ 364 billion
Active users: 2 billion
The cost of a user: $ 182
Capitalization: $ 227 billion
Active users: 1.4 billion
The cost of a user: $ 158
Tencent
Capitalization: $ 196 billion
Active users: 2 billion
The cost of a user: $ 96
Capitalization: $ 24.4 billion
Active users: 302 million
The cost of a user: $ 81
Yahoo!
Capitalization: $ 42.2 billion
Active users: 600 million
The cost of a user: $ 70
Capitalization: $ 24.9 billion
Active users: 364 million
The cost of a user: $ 69
Groupon
Capitalization: $ 4.5 billion
Active users: 160 million
The cost of a user: $ 28
Zynga
Capitalization: $ 2.8 billion
Active users: 100 million
The cost of a user: $ 28
Yelp
Capitalization: $ 3.5 billion
Active users: 142 million
The cost of a user: $ 25
