incrediBILL - 12:11 am on May 9, 2013 (gmt 0)
- (most) search engines are global, they might eventually like you less if you block them too much
- those in it for the bad things (scrapers, spammers, etc.) know dozens of techniques to work around it.
e.g.: they use TOR, they use a shared webhosting platform, they use a VPN tunnel, they use a botnet,
There are products on the market that block TORs, and they won't tell you how they do it either. I could tell you how all that could be blocked, it's not that hard, just a little more challenging, but then you would know to much and be a threat to national security.
If you think I'm kidding... <cue the black helicopters>
However, back to AdSense, I think the sudden jump in earnings is smart pricing suddenly being confused and it has to dump out all the higher paying ads first. Since all the low rent traffic has gone away it probably gets initially lost and thinks your traffic is worth top dollar briefly before it recalculates the value of the remaining traffic which might take a few days/weeks.
I my experience you'll come out with higher earnings somewhere in the middle after smart pricing figures it all out.
Keep us posted on how it prices in a few weeks.