If you’re an entrepreneur going head-to-head with your biggest rival, take note of the tactics used by US president hopefuls John McCain and Barack Obama. As the tension surrounding the election reaches fever pitch, the two contenders have ventured into enemy territory to try and sway voters.

Want a megastar to endorse your brand? You can’t go wrong with Lewis Hamilton who, at 23, has just become the youngest Formula 1 world champion in history – and is gearing up to become Britain’s first billion-dollar sportsman.