Everyone at MacHack must be hitting SlashDot’s RSS feed from the same IP address. I now see the following message in NetNewsWire:
Your RSS reader is abusing the Slashdot server. You are requesting pages more often than our terms of service allow. Please see the FAQ link for more information, and if you email us, include your IPID MD5: 867e304be85e8a81f92321cabf81e286. [Slashdot]