They did it for the lulz.
1337 SKILLZ, yo!
If you remember in some of the pirate bay litigation they actually seized the computer RAM.
Holy crap.
Unless the server was keeping logs, and I presume that it wasn't, how could seizing it possibly help the investigation?
The files are in the computer.
As if millions of hipsters cried out in pain, and then were suddenly silent.
Why did the hipster burn his mouth on the pizza?
Because he ate it before it was cool.
"Luke, I'm yer father, eh. Come over to the dark side, you hoser." -- Dave Thomas, "Strange Brew"