A month ago there was a bug with the Facebook Like button. It was reported to have an impact on some user’s analytics packages but I didn’t hear much from AdSense publishers on this topic.

A WebmasterWorld thread has one publisher claiming he saw a huge spike in AdSense income when the bug was happening and then a huge decline in that earnings once the bug was fixed.

He shared a chart showing the traffic just from the Facebook Like button:

The Google AdSense publisher explained:

Of course with huge surges in traffic and unusual spikes, you need to be considered with Google investigating the reason for the surge – it can ultimately lead to your site being banned from using Google AdSense.

Did you notice a change due to a bug like this in this date range?

Forum discussion at WebmasterWorld.