Classified advertising + advertising alliances + competitive rankings are the most profitable?

I have been an advertising alliance for a long time, and I have also been engaged in many classified advertising website customers, such as VEKEE, Qiji, etc. They have a selling point, but it is difficult to make money, it may be worth about $5 million to get the name of No. 1. I once asked Yao Jinbo why he liked classified advertisements. He asked me how to make money in the newspaper and why the classified advertisements in the newspaper could be so big. At that time, I nodded, this is the profit model, but it is still a little difficult to implement it on a pure classified ad site. If a newspaper only sends those classified ads, would you like to watch them every day? If we put classified ads on major sites in the form of alliances, can we achieve the same effect in newspapers?
The advertising alliance's profit-making model is a win-win situation for everyone. The webmaster gets commissions from you and relies on you. At the same time, you extract commissions from advertisers to win three. Currently, all major portals are ranked by bidding in the form of a consortium. In fact, there is no such advantage as classified advertising, for example, advertisement in The SINA bidding ranking, first, you have to have your own site, which is usually not accessible as an individual. In combination with spot price rankings, classified ads can directly display the ad content and contact information, if the small square is not enough, you can give them a classified advertisement page that fills in the detailed content.
If they are combined, advertising alliances make money. Bidding rankings allow advertising alliances to make more money, and at the same time, they can use this snowball method to create a very large classified advertising site for free.