Mobile ads is a shitty business, and by 'shitty' I mean 'hugely competitive'. The margins are so slim it can be very difficult to turn any kind of profit - not

Mobile ads is a shitty business, and by 'shitty' I mean 'hugely competitive'. The margins are so slim it can be very difficult to turn any kind of profit - not to say the right idea can't totally shake up the industry, just that it's very, very competitive.