From: Modeling population growth in online social networks
Renren
Twitter
Gowalla
40th
99.36%
42th
96.90%
16th
95.55%
45th
98.71%
44th
99.04%
17th
98.25%
50th
95.50%
46th
99.35%
18th
99.62%
55th
91.77%
48th
99.89%
19th
99.80%
60th
86.14%
99.53%
20th
95.43%