

Traffic Acquisition Costs (TAC), which is the portion of revenue shared with Google partners, totaled 25% of advertising revenues, as it did in Q1 2012. This is a 150% increase year-over-year from $420 million Other Revenues were $1.05 billion, which constitute 8% of total revenues. That’s a 12% increase from Q1 2012 revenues of $2.91 billion. Google Network - Google partner sites generated $3.26 billion in revenue from AdSense, representing 25% of total revenues. Google Sites - Google-owned sites generated $8.64 billion, an 18% increase year-over-year of $7.31 billion. Paid Clicks - Aggregate paid clicks, which include ad clicks on Google sites and Google Content Network sites rose 20% year-over-year and 3% over Q4 2012. Revenue rose 31% year-over-year to $13.97 billion for the quarter, beating expectations.

Google announced their Q1 2013 earnings today, and as many analysts expected, the company posted revenue gains over the previous year.
