Keyboard Shortcuts for Twitter? These are great!
? Opens a pop-up containing keyboard shortcuts.
n Opens up a dialog box to post a new status.
r Replies to the tweet that is selected.
t Retweets the reply that is selected.
m Sends a direct message to a user.
/ Takes you to the search box
. Moves you back to the top of the page and updates your feed.
g + h Takes you to your Twitter home page.
g + r Takes you to your Mentions (NOT Messages)
g + m Takes you to your Direct Messages.