At the end of every interview someone inevitably asks “Where do you see 37signals in five years? Ten years? 20 years?” My answer remains the same: “Still in business. Beyond that I have no idea.” Five years ago I had no idea we’d release Basecamp. Four years ago I had no idea we’d release Ta-da List. Three years ago I had no idea we’d release Backpack or Campfire. Two years ago I had no idea we’d