Title: Theory / Unimportant / CS / Softw / Website / Tweetdeck

Action: Reply
Letter: R
App: Tweetdeck

Action: Retweet
Letter: T
App: Tweetdeck

Action: Like
Letter: F
App: Tweetdeck

Action: New tweet
Letter: N
App: Tweetdeck

Action: Direct message
Letter: D
App: Tweetdeck

Action: View user profile
Letter: P
App: Tweetdeck

Action: view tweet details
Letter: Enter
App: Tweetdeck

Action: Close tweet details
Letter: Backspace
App: Tweetdeck

Action: Send tweet
Letter: enter
Ctrl: x
App: Tweetdeck

Action: Add column
Letter: A
App: Tweetdeck

Action: Show help
Letter: ?
App: Tweetdeck

Action: Go to final column
Letter: 0
App: Tweetdeck

Action: Expand/Collapse navigation
Letter: X
App: Tweetdeck

Action: Search
Letter: S
App: Tweetdeck

Action: Go to column n
Letter: n a number
App: Tweetdeck