Like-farming, aka like-harvesting, is a method used by commercial parties and scammers alike to raise the popularity of a site or domain. The ultimate dream of every like-farmer is for his post to go viral by accumulating as many likes and shares as possible. In the case of scammers, you will often see posts with memes, short movies, or shocking pictures that are turned around into a pyramid scheme, illegal casino, or a cryptocurrency Initial Coin Offering (ICO)”]
Source: https://blog.malwarebytes.com/101/2019/04/explained-like-farming/