Twitter - If you follow a “Tweet” link when not signed in, the Twitter dialog window allows you to sign in & Tweet in one action.
/via Rich Dooley
Twitter - The registration page uses a casual tone of voice in its validation confirmation messages.
/via abhimanyu
Twitter - On the mobile version, the error message lets you know that typing on a phone stinks.
/via @oi_joris
Twitter - After you change your password, the system reminds you how many apps have access to your account and lets you review them.
/via Rolando Murillo








