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I was checking my epc over 2008 (really talking about earnings per click or cpc if you prefer, but not about ecpm).
I made a graph and it is going down the drain, with a slump in September:
Could some other people share their curves? Would be nice to check if there are general trends.
(just avoid to post real figures on the Y axis, the curve is enough to check trends, and like this we would comply with Adsense's TOS)
What does the curve of earnings per click looks like so far in 2008?
[edited by: jatar_k at 2:38 pm (utc) on Nov. 12, 2008]
[edit reason] no urls thanks [/edit]
Rather than look at the curve in isolation, which may well be affected by seasonal factors, isn't it more informative to compare it against the previous year month by month?
CTR is down noticeably, however, resulting in lower eCPM. (Some--but not all--of that is my own doing; I've made AdSense a lot less prominent than it was a year ago.)
That's true starting in January, stays pretty flat, then rises an additional 20% at the beginning of October.
Something about the economy seems to be causing advertisers in one of the dominant subjects for ads on my site to compete more. I seem to be lucky in my niche.