A ruby script that allows you to take a screenshot and pushes it to dropbox. Use <space> when grabbing to switch between window and area modes.

screengrab_to_dropbox.rb

DROPBOX_DIR = "~/Dropbox/Public/pic"
DROPBOX_URL = "https://dl.dropbox.com/u/4381416/pic/"
filename = Time.now.strftime "grab-%Y%m%d-%H%M%S%4N.png"
target = File.expand_path File.join(DROPBOX_DIR, filename)
public_url = DROPBOX_URL + filename

abort "File already exists" if File.exists?(target)

def screencapture(target)
  system "screencapture", "-i", target
  abort "Aborted" unless File.exists?(target)
end

def clipboard_copy(text)
  IO.popen "pbcopy", "w" do |pipe|
    pipe.puts text
  end
end

def notification(text)
  IO.popen "osascript", "w" do |pipe|
    pipe.puts <<-EOS.gsub "\n", " "
      tell application "LaunchBar" to
      display in notification center with
      title "Screengrab" subtitle "#{text}"
    EOS
  end
end

screencapture target
clipboard_copy public_url
notification "Success! Dropbox URL copied to clipboard."