I really think analysts aren't looking at Google's income statement properly. I don't think Google is doing some kind of financial engineering, but their numbers doesn't look that great if you look closely:
1st Q 2011 GAAP net income $2.3B (adjusted to $1.8B after DOJ investigation, we'll use $2.3B anyway).
1st Q 2012 GAAP net income $2.89B
~$600 Million increase in GAAP net income.
BUT WAIT
1st Q 2012 Traffic acquisition cost totaled $2.51 billion
1st Q 2011 Traffic acquisition cost totaled $2.04 billion
~$500 Million increase in TAC
Google had to spend an additional $500 Million to earn an additional $600 Million net income. And it's the same thing if you compare other quarters YOY. The increase in TAC is almost equal to the amount of increase in net income. It's easier for Google to just withdraw money from it's own bank account and deposit it to another one and call it "net income". ;) jk