Qunar lets users look at all the deals on all of those individual sites, and makes money on display advertising and cost-per-click, instead of on commission.
去哪儿能让用户查看所有网站的所有产品,通过展示广告和点击收费赚钱,不收取佣金。
2
The cost-per-click approach could cost less overall, since you're paying only for each time someone clicks on the AD — but Facebook could discontinue your AD if it gets no clicks.