yes, I would prefer NOT to have this risk.
3 user accessing your blog dozens of times a day from the same IP without referrals (i.e. opening the page without having any link pointing to it..) . There might be a painful mis-judgement from Google!
If you don't want to remove adsense you might play with php or server-side includes and serve the adsense to all the world except the IP of the cafe.
I think it's quite dangerous. Google is smart but not enough to recognize everything, especially such a complicated and human being situation like this. They only see that the clicks come from same IP. I was in the quite same case, and now the banner on my web is Adbrite :D
Internet cafes are always something strange.
I was last year several times in spain in an internet cafe.
Using Google, I recieved a strange error message. Something like searching Google is not possible from this IP address.
This year, I was on vacation in Italy. When I visited webmasterworld.com from the internet cafe, I received an error message, that I have to log in, because of abuse from this IP address.
Visiting an internt cafe is some sort of an emergeny action, because GPRS would cost me 15.-EUR per MB in Italy. Just to check my emails and my AdSense stats and upload the latest changes from my web sites.
contact the adsense team and ask them? if they have the ip range on file then there should be no problem, but ask them first.
I know someone who was banned last year coz he made his site as the default page on all computers in a 20 computer cafe. His earnings shot up in a week to a records high and then he was banned.
There is NO WAY to prove that the ads are NOT clicked by the same person on that set of IPs.
The is a gray area, on the darker side actually. Call it Dark Gray...
Imagine all the invalid clicks cleaning up spilled coffee off mice and keyboards
Just configure your site so that those IPs won't get any AdSense ads served during that time. You'll still get the additional exposure, people will bookmark your blog and recommend it to others etc., but you don't run the risk of invalid clicks.
why dont you contact google and ask? than it would be nice to read a report on what THEY told you to do....
It would indeed be nice to hear G's opinion!
If it is allowed, then I might just pop down to our local library and a couple of Internet caffs and sponsor them to be the home page for a week or two as a genuine local resource. I'm sure they would welcome the income.
But what should the action bring?
I expect a good conversion when somebody searches, comes to a page about the search term with information and some ads about it.
What conversion should a random visitor from an internet cafe have?
Low CTR, low EPC because bad conversion and smart pricing. I would expect only 5% of the eCPM compared to visitors coming from a search engine.
Even with 10 visitors a day * 3 computers * 7 days, it's only 210 visitors total, and a site has to be really good to convert such random visitors to only $2.
So for nearly no money risk the AdSense accout?
This would be for general awareness, rather like a CPM ad, and the numbers would surely be low enough not to affect smartpiercing (!) too badly?