stackoverflow: 1429
superuser: 487
askubuntu: 487
unix: 212
drupal: 206
english: 186
salesforce: 169
math: 162
electronics: 141
gaming: 128
dba: 121
security: 118
scifi: 112
gis: 104
wordpress: 102
sharepoint: 98
magento: 96
programmers: 91
mathematica: 88
mathoverflow.net: 86
physics: 84
academia: 78
ru.stackoverflow: 77
puzzling: 77
android: 77
travel: 76
meta: 76
ell: 74
apple: 72
money: 69
stats: 67
webapps: 63
movies: 63
diy: 62
tex: 56
worldbuilding: 55
raspberrypi: 53
codereview: 53
graphicdesign: 53