My organization already has a strong informal learning culture - people are used to learning from one another within their 'silos' - and generally aren't afraid to pick up the phone/email. How can I use technology to facilitate 'inter-silo' learning and communication - in a heavily unionized, top down type of organization, that is still using a phone PBX from the late 90's (techno-phobic). We have identified the breaking down of silos as a key strategy for future success, but everytime somone mentions "social media" use internally - everyone says "It's a bargaining year, we can't take the risk that someone will say/do something that will jeaprodize our position." Help!