look at Carbonite today:
http://finance.yahoo.com/echarts?s=CARB+Interactive#symbol=carb;range=1d;compare=;indicator=volume;charttype=area;crosshair=on;ohlcvalues=0;logscale=off;source=undefined; (http://finance.yahoo.com/echarts?s=CARB+Interactive#symbol=carb;range=1d;compare=;indicator=volume;charttype=area;crosshair=on;ohlcvalues=0;logscale=off;source=undefined;)
True enough, but if you look at the longer chart - 6 months in this case - you can see that the trend from today is within the trend lines the stock has set up since the middle of December, so the decline today is not necessarily the result of people selling off the stock in response to their withdrawal from Rush' show.
The 6-month chart is here: http://finance.yahoo.com/echarts?s=CARB+Interactive#chart5:symbol=carb;range=6m;indicator=volume;charttype=line;crosshair=on;ohlcvalues=0;logscale=off;source=undefined (http://finance.yahoo.com/echarts?s=CARB+Interactive#chart5:symbol=carb;range=6m;indicator=volume;charttype=line;crosshair=on;ohlcvalues=0;logscale=off;source=undefined)
The basic chart looks like this:
(http://chart.finance.yahoo.com/z?s=CARB&t=6m&q=&l=&z=l&a=v&p=s&lang=en-US®ion=US)