Alf's Zoo -- This week, live from Social Media Marketing World in San Diego, we bandy about the importance of Twitter, Google + and Facebook in the business world. Beyond finding cool recipes, sharing information does impact CIOs' purchasing decisions, according to online connoisseur Eric T. Tung. Big part of social media, however, is the art of listening and learning from what your peers and customers say. Like consumer items on Amazon.com, you'd never buy an enterprise software unless it was highly touted on the networks. Replacing email, social engagements are how we communicate today -- whether we like it or not.