In response to remarks made on twitter this week by anchor David Shuster, a spokesperson for MSNBC tells Politico, "The comments were inappropriate. We have talked to David about them." Following the arrest of conservative video producer James O'Keefe and three other men for allegedly tampering with Sen. Mary Landrieu's phones, Shuster tweeted: @JamesOKeefeIII a) you are not a journalist b) the truth is you intended to tap her phones c) it's a felony d) you will go to prison. Shuster traveled to New Orleans to report on the case, and appeared on Keith Olbermann's program, the first 20 minutes...