Both, although my preference is very much for backend and infrastructure.
But for backend I find very rare occasions to use them. Only when I create new REST calls or implement some fairly boilerplate code that talks to the database we need such things... although that is a limitation of the technologies we use.
Maybe frontend will get there at one point in terms of redundant code but for now, snippets are a decent alternative.
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.