because the first has the audacity to not agree with the left and the second is a corporation who patents genetics and similar?

Really it all comes down to irrational hate by one side or the other and unfortunately this type of irrationality is best observed on sites like Hacker's News and Slashdot, Digg was bad too in its good days. The level of pretentiousness is astounding, but fortunately other than up/down/karma and bombastic posts the members of such sites do little else.