There seems to be an increase in the frequency of postings in Adsense forums from publishers noting that their earnings have slipped in the past few days. Of particular note is that a number of publishers are reporting drops in their ‘per click’ earnings (to get this figure divide your total earnings for a day by the amount of clicks for that day).
This is a trend I’ve noticed since Thursday 5 May in my own statistics. I’ve not been able to find any explanation for it as there have not been any abnormal traffic rises or falls on any of my blogs.
I can’t see many good explanations of this decrease in EPC but wonder if maybe Adsense has updated its Smart Pricing algorithm. This might account for some of those in the discussion forums reporting increases in epc at the same time.
Check out the discussion on this at:
Got any theories to share? Noticed any changes to your EPC?
Update: it is interesting to watch the theories fly around on this one. I’ve seen everything mentioned – from Google increasing their cut of earnings, to it being linked to the new features available to Adwords advertisers, to some large advertisers pulling out of Adsense, to it just being a new way of reporting statistics, to it being an update in their Smart Pricing algorithm to it being linked to an increased number of UFO sightings…..hmmmm, You got to love Adsense publishers paranoia!
Update II: Jen has started a Who is seeing a HIGHER EPC these days? thread at Webmaster World. It seems like a few noticed a similar increase at the same time that others noticed the decrease – which to me looks a little like an update in the algorithm.
Updated III – looking at my own stats it seems that things have changed back again. The decrease in EPC that I’d noticed since 5 May today increased back to a ‘normal’ level. Others in forums have noticed this also.