You should be aware that Yearn Land creators will only start farming at the same time as the rest of the community. No project will be successful if the developers do not devote sufficient time and energy into the project. A farming subsidy is important to the development and longevity of the project in both development and marketing.
Each vault follows a unique strategy that's designed to maximize the yield of the deposited asset. Using a yLand Vault is like having access to the most advanced money manager in the world.
yFarm is the powerhouse behind the product and is likely the option users want to choose to seek the best returns on the market. Harvest = selling the farmed asset back for the main asset.
Users can exchange different assets bi-directionally into pooled interest-bearing tokens using the yZap feature. Goal of yZap is to encourage swap between different coins.