content: tell application "System Events"
  	tell process "Notification Center"
  		-- activate notification center
  		click menu bar item 1 of menu bar 1
  		-- click the tweet button
  		click button 1 of UI element 1 of row 2 of table 1 of scroll area 1 of window "Window"
  		-- select all (in case there is existing text)
  		keystroke "a" using {command down}
  		-- fill in the text
  		keystroke "{popclip text}"
  	end tell
  end tell