Dear Facebook, We need to talk. It's not easy for us to say this. We've spent years together. You were there when businesses first realised they could talk directly to their customers online. You helped brands find audiences, build communities and turn social media into a serious marketing channel. And, if we're being honest, you've been pretty good at it. But lately, we've been wondering whether there might be something else out there. Before you panic, we're not saying we'r