Types in HTML phrases: I've defined "ahr" to yield "". Whether I'm in BBEdit, or in a TypePad form within a Web browser, I can get these key HTML strings out quickly and error-free.Link
Types short phrases: This is great in e-mail. I've set it up so that "tf" becomes "thanks for"; "tfy" becomes "thanks for your"; "tvmfy" becomes "thanks very much for your"... and so on. You can be as polite as you want, and optimally efficient, at the same time.
Mark Frauenfelder is the founder of Boing Boing and the editor-in-chief of MAKE and Cool Tools. Twitter: @frauenfelder. Come and hear Mark speak at the ALA conference in Chicago on July 1.