Do clicks from abroad gives you a better pay? I heard if you get click from same computer the rate will be less, is that true?
You should not be getting clicks from the same computer. This would be click fraud. On the other note, clicks from the US generally get more than clicks from elsewhere because they are the biggest target market and plenty of money to spend.
well we con not control someone who is clicking the ads more then once to find what he is looking for. Why would that be a fraud if someone clicks more then once on an ad in your page?? Please explain.
Most advertisers with relatively large budgets are from the US so US traffic will most likely earn you much more as oppossed to international traffic. That being said, some countries might have country specific advertisers that might also pay very well.
Clicks in different countries will be worth different amounts but it will be hard to pin down a particular country that pays the most. Viewers from different countries can see different ads. If your site is about widgets then the highest paying clicks will come from countries where the market for widgets is more lucrative. Exchange rates may also have an influence, I'm sure UK advertisers pay more $ than US advertisers do.