@radp,
Meta Server Fault
--There are 207 questions
--There are 622 answers
--Directory size is 1.93mb
Meta Stack Overflow
--There are 12659 questions
--There are 39830 answers
--Directory size is 118.64mb
Meta Super User
--There are 411 questions
--There are 1024 answers
--Directory size is 3.23mb
Server Fault
--There are 50009 questions
--There are 123731 answers
--Directory size is 260.90mb
Stack Apps
--There are 586 questions
--There are 887 answers
--Directory size is 5.68mb
Stack Overflow
--Directory size is 5,641.41mb