神奇！dropbox是有注册机么

zktz

今天突然收到一堆邮件，提示我有人用我的邀请码注册了dropbox，然后给我加容量了。
然后我的dropbox容量用6g到18g了（34.1% used (6.2 GB of 18.25 GB)）。

1.          Your quota increased to 18.25 GB for referring f5chmtqrqw f5chmtqrqw        3 hrs ago
   
2.          Your quota was increased to 18.25 GB!        3 hrs ago
   
3.          Your quota increased to 17.75 GB for referring 2o55cf2wma 2o55cf2wma        3 hrs ago
   
4.          Your quota was increased to 17.75 GB!        3 hrs ago
   
5.          Your quota increased to 17.25 GB for referring tjgveuiun tjgveuiun        3 hrs ago
   
6.          Your quota was increased to 17.25 GB!        3 hrs ago
   
7.          Your quota increased to 16.75 GB for referring x966apx0ar x966apx0ar        3 hrs ago
   
8.          Your quota was increased to 16.75 GB!        3 hrs ago
   
9.          Your quota increased to 16.25 GB for referring 33an2s5ngv 33an2s5ngv        3 hrs ago
   
10.          Your quota was increased to 16.25 GB!        3 hrs ago
    
11.          Your quota increased to 15.75 GB for referring 71rrhunoo 71rrhunoo        3 hrs ago
    
12.          Your quota was increased to 15.75 GB!        3 hrs ago
    
13.          Your quota increased to 15.25 GB for referring 930wagnfyt 930wagnfyt        3 hrs ago
    
14.          Your quota was increased to 15.25 GB!        3 hrs ago
    
15.          Your quota increased to 14.75 GB for referring lb2dl8u2sm lb2dl8u2sm        3 hrs ago
    
16.          Your quota was increased to 14.75 GB!        3 hrs ago
    
17.          Your quota increased to 14.25 GB for referring k1dhmkh7tc k1dhmkh7tc        3 hrs ago
    
18.          Your quota was increased to 14.25 GB!        3 hrs ago
    
19.          Your quota increased to 13.75 GB for referring p99zid8eq p99zid8eq        3 hrs ago
    
20.          Your quota was increased to 13.75 GB!        3 hrs ago
    
21.          Your quota increased to 13.25 GB for referring sid540j2xo sid540j2xo        3 hrs ago
    
22.          Your quota was increased to 13.25 GB!        3 hrs ago
    
23.          Your quota increased to 12.75 GB for referring 8nqbj7oo5s 8nqbj7oo5s        3 hrs ago
    
24.          Your quota was increased to 12.75 GB!        3 hrs ago
    
25.          Your quota increased to 12.25 GB for referring vjnzdg4co vjnzdg4co        3 hrs ago

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