I don't know Omar, but I've known employee number 2 at Admob Russell Buckley (one half of the MobHappy gang) - for a number of years. Wonderful result for him and the team, and a lesson for me. I've spent a lot of time thinking up fancy-schmancy new mobile advertising paradigms, most of which are gathering dust in powerpoint archives, whereas these guys "just" went out and built something that is simple to describe (banner and text ads on mobile websites) and they crucially, executed well, with smart advisors. Seven hundred and fifty million proof points that execution matters sooo much more than ideas.

So if I ever find myself going down the startup route, and i) what I do can't be described in 7 words or less and ii) executing to those 7 words is not what every employee spends all their time doing, someone please shoot me.