The latest Facebook design has one major issue, the ambiguity of the icons for Friend Requests, Mail and Notifications.
Name the first thing you think of when you see each of the icons.
Friend Requests – Friends, People? What about the requests you get from people who really aren’t your friends?
Mail - Chat? Is Facebook saying mail is the new chat? We’ve all had email for at least ten years. Why not use the conventional envelope icon?
Notifications – The world? The World Wide Web? Earth?