The Washington Post is engaging in online political activism by encouraging its readers to boycott news coverage of Sarah Palin. The Post has picked up the call initiated this morning by Post columnist Dana Milbank, adding a Twitter link on the column page. The link generates a message to be sent from a Twitter member’s page that reads, “I’m making February a Palin-free month. Will you join me?” The Post added the Twitter link to Milbank’s column this afternoon, several hours after running and pulling a Washington Post online poll about boycotting Sarah Palin news coverage. The poll initially accompanied...