Tell me people, is 0.01 $ the lowest price for one click or are there some 0.005$ or something like that? As I observe, this could be possible (but not sure if should I be or )
Yes, those .01-cent clicks are usually from those ebay ads. Ebay buys mass quantities of ad time on Google (or their affiliates do), and their ads are pretty much worthless to the publisher. That's why you should, if you haven't already, block ALL ebay ads from your site, from all countries. I don't usually use the filter, but after much trial and error, have come to the conclusion that there is no point in showing Ebay's 1-cent ads.
Supposing you got 1 cent from two clicks has different understandings. There's no such thing as 0.005. Perhaps you got 1c from an ebay ad and an invalid click, or perhaps you got two invalid clicks and you were also paid a cent for the number of ads showed on your page (CPM).
Those ebay clicks are really, really REALLY worthless. So two clicks for .01 cent if they're both clicks on an ebay ad? I wouldn't say it's impossible.
I believe it is possible for a publisher to be paid less that .01 for an ad click. The advertiser proably pays .01 or more but G must take their share.
I don't think I have any eBay ads, but these invalids are possible. But what are invalid clicks? I don't click on my own ads, so who click, robots? Humans? Maybe humans by some proxies? Thank you for your concern.
Invalids are any that google feels are suspect. eBay ads aren't the only low paying ones. Several of the big arbitraging MFAs are down in the low single digits. They get filtered when I find them.
I have left ebay OUT of my filter for the simple reason that while some of the clicks are down low, it occasionally comes through with some relatively decent ones.