Key-Totaler No More - Gmail (Google Mail)

Long-time abstainer Gmail has taken to drag-and-drop: you can now move messages to labels and drag labels to messages; you can even jostle labels out of sight (though not re-arrange their order or create sub-labels).
If you wonder how you will be able to adequately exercise your dragging muscle: Gmail's message size limit was recently bumped up to 25 MB.
›› Gmail is the Google approach to email and chat. Practically unlimited free online storage allows you to collect all your messages, and Gmail's simple but very smart interface lets you find them precisely and see them in context without effort.