The US travel services industry, which includes both traditional and online travel agencies, increasingly faces a new source of competition for booking services: the airlines and hotel operators themselves.

A growing number of airlines and hotels are adopting strategies — such as loyalty programs, fees on third-party bookings, or discounts on direct bookings — to encourage consumers to book services directly with them.

Long reliant on advertisements as their primary source of revenue, internet publishers, broadcasters, and search engine providers face mounting challenges to their ad-supported business models.

In particular, the rising use of ad blockers – software programs that prevent internet ads from being displayed – by consumers is threatening to undermine the industry’s key source of revenue.

Tempur-Sealy International, a leading manufacturer of sleep products such as mattresses and foundations, received a rather rude wake-up call September 28. Tempur-Sealy’s shares (NYSE:TPX) fell over 20% that morning after the company announced that it expected full year sales to decline between 1% and 3% from 2015 levels. While Tempur-Sealy cited lower-than-expected third quarter sales for the revision, the company did not provide an explanation for that decline.

Competing manufacturer Select Comfort Corporation’s stock price (NASDAQ:SCSS) also fell on the news, suggesting that investors are concerned about the outlook of the broader industry.

Many participants in the US repair services industry, particularly small independent repair shops, have faced mounting challenges over the last decade. During this period, one key trend has been manufacturers’ increasing control over the repair of their products. Recent events, however, have given pause to this trend and even promise to reverse it.

For decades, the tastes and preferences of the largest generational cohort — the baby boomers — have been an important factor shaping key trends in the US small appliances market. This group, noted also for its affluence, is now joined by another even larger generational group: the millennials.

There are a number of trends causing shake-ups in the personal care appliance market, leading to some interesting questions.

• Why is a vacuum company making hair dryers?
• How do the increasingly active lifestyles of elderly Americans present an opportunity for appliance companies?
• And what on Earth is “peak beard”?

If you want the answers to all these questions (and more), read on.