Google shocked analysts on Thursday with a sterling earnings report that showcased the success of its Android operating system. On an annualized basis, Android reaped $1 billion in revenue, compared with $2.5 billion for Google's core display advertising business. Noted Google CEO Eric Schmidt, "Android is much bigger than I could ever have hoped for. Android can become a hugely profitable business for us. Search on mobile will eventually exceed that of PCs ... so, eventually, mobile will be a very, very strong revenue stream in comparison to PCs."