It doesn't seem that long ago that we didn't know what social media was. Now there are more channels than we can name, and they go in and out of fashion at a fast pace. (Even Facebook is seeing a decline - a channel that many organisations have put so much time and effort into.) Social media isn't going away, so we need to know how to navigate this movable feast in our roles. What should we focus on? How can we build a strategy for a channel that could be gone in two years? When should we take on new channels?