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Click-thru rates and earnings swing about considerably. As has been pointed out elsewhere on this board, you need to look at the 'big picture' to identify any trends. Small samples of clicks and earnings such as low-traffic days are unlikely to be significant in statistical terms.
With (relatively) small numbers, one or two very big or very small results will skew the overall daily average and can be very misleading.
Looking at the last month I'm finding a steady trend towards more click-thrus. Perhaps the targeting is getting better?
Generally impressions are fairly static, but (I would like to think because of better targetting and on page placement) CTR has been higher, and CPC higher
Welcome ap_Rhys, thought he died in the 12th century or thereabouts ;)
Business people do some planning during weekend for the week ahead. But if your site is casual-related, such as travel site, do not count on the weekend.
Anyways. I still have 3.5hours to my half day mark, and at 700 imps (expected 1100 for halfday) I might still be in the race today was 1100 yest in total, that was screwy).
I can't wait to get my logs back online so I can figure out where these visitors are from and what clock they're ticking on.