Speaking from experience and having been banned from Yahoo They will not pay for any non us clicks. Which seems stupid to me as I so SEO & SEM for a living and we all know we want to drive traffic to our sites. Start using GEO Targeting to keep their ads from displaying overseas......otherwise you will join me and others in being banned. Ohh and they are kind and tell you after banning........ to join again when they are out of beta
Sorry to hear you were banned, have you asked for the account to be reinstated with the promise that you would geotarget the ads? They are really reasonable, and seem to reinstate msot accounts if the reason for them being banned was fixed.
Yes I actually went back and forth with them on the issue and bought a GeoTargeting system and installed, but there were other issues of same IPs address clicking multiple ads, which also seemed to hurt my case. Seems I needed another system to not display ads to the same IP more than once... I appreciate your words but I did not loose too much sleep over it as the sites are not my main revenue source, I actually just moved into the field after having built so many other peoples businesses, I figured I should do some for me too.