I like that it's easy for users of my website to sign up, use their picture, change their profile pic, etc. It was never really clear how to get started with using it in our own app/website. There are also many different ways you can customize your avatar (e.g., face expression). In order to set up gravatars correctly, you have to understand what each option does. The free version only lets me upload one file per week; if I want more than 1 file, then I need to upgrade to the Premium plan which costs $5/mo. Also, when I try uploading an image through this service, sometimes it takes longer than expected, so be patient! You should definitely look into implementing this if you're looking to add some visual identity to your application or website. We needed something to help us identify who signed up / posted content, as well as make sure we.