I beg you, if you are a developer of an open source app or program - add screenshots of your app to the README file. When looking for the perfect app, I had to install dozens of them just to see what the user interface looked like and whether it suits me. This will allow users to decide if the app they choose will suit them… Please, don’t think about it, just do it…
Yup, if I don’t see screenshots for a desktop applications, I don’t bother since the developer clearly doesn’t understand what they’re doing. It’s especially baffling when it’s a WM/DE. It’s really trivial effort too. If the devs don’t get this basic point, it’s going to reflect in their poorly designed UX/UI as well.