I assume they are part of Google itself. From the earning's report [1] it seems like total revenue was $21 billion for quarter ending in December. Around $19 b

I assume they are part of Google itself. From the earning's report [1] it seems like total revenue was $21 billion for quarter ending in December. Around $19 billion "Google advertising revenues" and $2 billion "Google other revenues". There seems to be no more break up of beyond that point. [1] https://abc.xyz/investor/news/earnings/2015/Q4_google_earnings/index.html https://abc.xyz/investor/news/earnings/2015/Q4_google_earnin...