There is a new kid in town when it comes to online marketing - Facebook, after years of trying to convince marketers that it was a viable platform, is starting to make its mark.
"Starting" is the word to note, of course, given that Google's global ad revenue was north of $43 billion in 2012 compared to Facebook's $4.28 billion.
But the omnipresent social network is resonating with some serious brands, such as car manufacturers, credit card firms and the usual marketing giants in the shape of P&G and Unilever, although unsurprisingly, apart from high PPC spender Booking.com, there are no other travel brands in either of their respective top ten advertising clients (unless you count Walt Disney).
Facebook clearly has a long way to go before it makes a significant challenge to the dominant position of its rival down the road in Silicon Valley, but this infographic from e-Intelligence has some great data to illustrate where the pair currently reside in the online advertising ecosystem: