Wordle

 The key words that Wordle has picked out above is actually a fair assessment of the article in it's entirety. The article deals with the concept of crowdsensing, or, very simply, as mobile users rode the train and the train became more and more crowded, riders immersed themselves in their smartphones and were found to purchase more coupons and promotions which were send to their devices. My observation is that the majority of the words are indeed accurate and relevant, such as: mobile; smartphone; commuters; coupons; and the like, while a very small portion are irrelevant such as: Mr; Ghose; York; and brim. However on balance, with only so few irrelevant words, the graphic as a whole is very useful, bringing the most important words right to the front, and with little effort the reader get's the gist of the article.