Well, 'killed' in the sense that I just dropped Slashdot from my RSS feed. I'm probably a bit behind the curve on this, but I continue to find that every reasonably interesting story I see on Slashdot is something I've already read about at least one or two other places.
Slashdot was a primary feed for me for a long time, long before RSS became popular. I remember the days where EVERYONE read Slashdot, and it was a marvel of internet scalability (or lack there of at times). But as time passed and I added more and more blogs to may feed reader, the value of Slashdot kept diminishing.
So mark this day as a milestone (for me). The old new internet is dead. Long live the new old internet.