I have recently started using an AdWords campaign to promote a website with a Firefox referral button on it. I am almost breaking even on a day-day basis after taking a $100 shock on a poorly targeted AdWords campaign. After I got blasted for a Benjamin, I paused the campaign to research and restructure it. 24 hours after the campaign was paused and the ads had stopped appearing, I was still receiving an unusually high number of referrals for FireFox. I know that to earn a conversion, a visitor must click on my referral button, download Firefox, and run it once. Is it possible that I have had people who downloaded the Firefox browser, but never ran it, only to run it a day later and complete the conversion? How long do my visitors have before the conversion is lost?
I think that they already had firefox (older version, or new version without google toolbar), that's why you don't get money for that.. you get money only when their windows never saw firefox installed of course they must use it, and search throught the google toolbar...