Banned for I downloaded a .arc file, (which is sort of like a .rar file), total size of 606 MB. I extracted its contents, to find out that it had compressed 3.60 GB into one 606 MB file.
So at this point I thought, "whoa thats impressive, 3.60 GB compressed into 600.", because thats really remarkable right?
Well, guess what. Inside the extracted folder (the one with total size of 3.60 GB) there was a .exe file, which I double-clicked, and it started extracting some more files, resulting in a total size of 7.76 GB.
JESUS CHRIST 
"Cute Pokemon always get Parahax!"