We've just been discussing how to translate Like/Unlike to Russian. Hm, any version sounds not good or consists of too many letters to be a button and Unlike is really impossible for a translation less than of two words. I guess many localizations will surely stuck at this point. Meanwhile "+1" became a common interforum phrase with a meaning of "i like your idea, but i've got nothing to add" which seems to be similar to "Like". "-1" then could be an international "Unlike" edition. ?