Along with the Summer Sale, User profiles have gotten big improvements and more customization options like Themes, Animated Avatars and Avatar Frames! Thank you Valve! : r/Steam
Steam Community :: Guide :: Unusual pictures for your avatar [2]
Steam Avatars Deadpool Dump Album On Imgur - Cool, Cool Profile HD wallpaper | Pxfuel
STEAM AVATAR
SteamAvatar.io
Steam Question Mark Icon #9804 - Free Icons Library