From: A case study of contributor behavior in Q&A site and tags: the importance of prominent profiles in community productivity
Tag
# Contributors
Posts
Windows 7
16,483
114,990
Linux
12,412
74,140
OS X
8,439
49,028
Ubuntu
7,795
36,014
Windows XP
6,979
39,467
Mac
5,573
26,878
UNIX
2,675
10,033