With high costs and concrete departure times, booking a flight is a big commitment. For online travel agents, this means that many visitors to their sites browse options, but don’t complete their bookings. Asia’s leading online travel agent, Zuji, now thinks it might have solved the problem.

Nearly 60% of UK women have a Boots Advantage Card, earning points whenever they stock up on shampoo. Its companion app uses the mass of data collected via the loyalty scheme to display in-store offers tailored to each customer. But is this use of data met with open arms?

“Google policy is to get right up to the 'creepy' line and not cross it,” says the company's CEO. But when does insightful personalisation become intrusive? And how do brands build lasting relationships with consumers concerned about being spied on?

Advert-blocking browser plugins are growing at a rate of nearly 70% year-on-year. The most popular, AdBlocker, reached 150 million users in June 2014. And if people really are more likely to climb Mount Everest than click a banner ad, what is next for online advertising?