No pictures were actually hosted on Scans_Daily on Livejournal.
They didn't stop the community being TOSed.
No files are actually hosted on The Pirate Bay.
But year long jail sentences have been handed out.
That's a dramatic example, but the short answer is that posting links to where people can read entire comics or enough to utterly violate fair use laws on this community jeopardizes this community and, I'm sure you can understand, we're doing what we can to preserve it.