Chris Horn, chairman of Iona Technologies, quickly took to the Twitter machine on Wednesday to raise his digital eyebrows at the potential $19 billion Facebook paid for Whatsapp. Horn retweeted that the buyers apparently think it is worth "19 Instagrams" (or 70 Independent News & Medias?) Horn's Twitter account now carries the rider that it is "completely unrelated" to religious group the Iona Institute. Oh, to have namesakes...