Online reviews are a vital input for consumer decision-making. However, reviews are easy to manipulate, and widespread fraud is undermining credibility and raising the issue of consumer protection.

Facebook, Google, and Amazon utilise reviews to improve the consumer experience, but also to sell advertising to businesses and to address fraud. These companies leverage their data superiority to better utilise reviews on their platforms, and possess a competitive advantage, versus sites like TripAdvisor, Yelp, and eBay.

Demand for expert opinion remains strong, yet is supplied only by publishers and Which?, a small segment in terms of share of traffic relative to platforms.

In China, Alibaba and Tencent compete for food delivery to expand access to a fast-growing source of mobile user data, using their chat and wallet super apps to funnel customers to their food delivery apps

In the West, the rivalry is direct between the food delivery apps – Just Eat, Uber Eats, and Deliveroo – and the costs of last-mile delivery dissuade challengers

In the UK, Amazon will change the game if it succeeds in its proposed purchase of a minority stake in Deliveroo, which Uber failed to buy last year. Progress on the merger of Amazon and Deliveroo is suspended by the regulator

Launched to the world in September 2017, TikTok is the first Chinese app to pose a serious threat to Western social media companies as it attracts hundreds of millions of Generation Z users around the globe

Privately-owned parent company Bytedance earned $7 billion in online advertising revenues in 2018 and is valued at $75 billion, placing it ahead of Uber as the world’s most valuable internet start-up, with an IPO likely this year

Bytedance’s goal of earning half its revenue outside China by 2022 is far from certain. In order to hit the target, TikTok will need to attain super scale with best-in-class revenue per user, an unlikely combination

New car registrations will be down 6.3% (2.4m) in 2018, another year of decline from the 2016 peak of 2.7m, impacted by the soft consumer confidence in big-ticket purchases, with some spin down to used car sales

Auto Trader, despite the car industry’s downturn, has experienced only marginal pain thanks to the strategic focus on revenue diversification – principally into new cars, dealer auctions and enhanced subscription-based services for dealers

Our forecasts for media expenditure on cars in 2018 and 2019 are essentially flat. Auto Trader’s positioning offers insulation in a downturn, and we expect they will gain share in marketing spend, though not necessarily in terms of total consumer or industry expenditure

The Federal Communications Commission’s Privacy Order (FCC) was overturned by the Senate, clearing the way for ISPs to ramp up consumer data-driven advertising revenue.

While Google and Facebook dominate digital advertising in the US as in other markets, the US is alone in removing regulatory barriers to ISPs taking a piece of the pie.

US ISPs now have a self-regulatory regime for consumer rights on transparency, security and data breaches; but in the UK and EU, privacy advocates prefer enforceable rights.