AdSense
"All that Glitters is not Gold."
I bet you must have heard the Quote many times till date.
Yesterday, for around 10 hours, Google AdSense served less relevant contextually-targeted ads instead of regular context sensitive ads, thereby lowering revenue for many sites for the day.
This might come as a surprise to you in light of their recent Q3 results in which they beat forecasts by 31% increase in revenue.
Please share your experience with Google AdSense for Feeds.