An unsolicited e-mail arrives in your in-box from Marc Racicot, chairman of the Bush-Cheney ’04 campaign, asking you to donate “using our secure server,” at www.GeorgeWBush.com/Contribute/, a total of $2,000, $1,000, or a smaller sum, to keep TV ads exposing John Kerry’s miserly defense spending record on the air. Political spam, like this message, is…