Adsense Referals program regrets and decide not to retire its program of countries that are outside the United States, Japan and Latin America, but introduces a substantial change to them. For example, if you live in Spain, they will only count the referals that you generate in the United States, Japan and Latin America, but not those on your own country, or any other not included in these countries and latinoamerica. So far this single information was published the official blog of Adsense in English.
Another important news is that there will be changes in the referal programs of the Google Pack and Firefox: Google Pack: The gain of $ 2 for download and installation of the Google Pack, descends to u$s 1, independent of the origin of the referred one. Firefox: They do not clarify amount, but also they reduce the commissions.