I really liked the option to continue displaying advertising on Slashdot. It was nice - I felt like I was allowing them to continue to get revenue from my browsing habit.
But, recently, they started having "sliding" flash advertisements. These ones continuously change the height of the page so it's difficult to read the text beneath it. It made it impossible for me to click the right link - oftentimes, I'd attempt to click on a link only to discover that the page had slid around in the meantime and something else got clicked instead.
So now I had to disable advertising. Thanks for leaving the option there for me