According to AdSense official blog report, AdSense promotion will be a major change, first of all, to explain that this change is only for the promotion of AdSense advertising, other products will not be promoted, the future changes will be based on the geographical location of the user to make different changes.
Pricing changes for users in North America, Latin America, and Japan
Previously AdSense promotion of the incentive scheme is: "If through your referral registered Google AdSense Publishers in the 180 days after the registration of the us$5.00 revenue, we will pay you us$5.00. If the publisher obtains us$10 within 180 days of registration 0.00 of the income, and the eligibility to accept payment, we will pay you extra us$250.00 ".
Now that the reward program is over, AdSense will return to the original pricing structure, 5 dollars and 2000 dollars against the rewards will be discontinued, if the registered users in 180 days to obtain 100 dollars, the promotion will only receive a 100 dollar reward. These price changes will take place in the last week of January.
AdSense Promotions outside North America, Latin America and Japan will be terminated.
Publishers outside these three regions will no longer have AdSense referrals, as Google finds AdSense referrals in these areas are not ideal, and soon, users in these areas will not be able to see the options for AdSense referrals, but users can still promote other products.
Now has been to the AdSense advertising code to remove the time, adsense 250-dollar referral is still very attractive, remember last October I was one months to get 3 250 dollars conversion, but later no such opportunity.