The company said today it offers so-called sections, which give users a wider way to put their ideas - such as weddings and other events. These types of big events can turn out to be huge, very expensive life moments, and the Pinterest definitely wants to be the place where we keep all these memories.
It says it was the most demanding feature at all times, and this is probably for big reason. Pinterest explained psychology based on arranging things and keeping things organized in one spot. So adding another abstraction layer to the process of holding onto everything on the palette makes a lot of sense for a subset of users who are more aggressive about keeping their ideas in some logical flow.
If you are planning a wedding, for example, there are many things separate. You may think about the place of your wedding or what you want to wear or make arrangements for flowers and what to do. In large events where you want to dive immediately into search and destroy mode, such as a wedding party - especially those you want to engage friends - having a central hub for everything makes you organized and calm.