As mobile devices become increasingly commonplace throughout all age groups, the importance of ads on mobile phones is becoming readily apparent. $8.8 billion was spent on mobile advertising worldwide last year alone, and global giant Google has been reaping the benefits. More than half of that money was spent on Google’s advertising services, according to eMarketer.

Next up was Facebook, which made almost half a billion dollars in ad revenue last year according to the study. Facebook’s revenue is expected to jump another 333 percent to over 2 billion dollars in ad revenue in 2013, becoming tight competition with Google. It all comes down to whether marketing will be more effective in internet searches, or on the social networks of the world.

Game publishers have already been exploring Facebook advertising with great success. Such advertising dovetails with the increasing Facebook presence for marketing purposes that game companies have been creating.