Technical Correction: They are linking to slashdot's server, not "serving that image from slashdot's server". Slashdot's server is serving the image. It could only be a copyright violation if linking could be a copyright violation - they have not reproduced the material in question.
Technical Correction: They are linking to slashdot's server, not "serving that image from slashdot's server". Slashdot's server is serving the image. It could only be a copyright violation if linking could be a copyright violation - they have not reproduced the material in question.