“Feather” (a play off a quill) was my prototype (I built a lot of prototypes there in my “spare” time :)) for a richer, write/tweet only app. You could author long-form content, quickly jump into the camera for recording video or taking a picture (goal: frictionless citizen journalism), and other stuff. I wanted to build a delightful tweeting experience and at the time, it felt like the mobile implementation was just yanked wholesale from Web.