Web marketing - it's too early to define best practices

An infographic from Dream Systems Media Blog gives an overview how marketing developed since the 19th century. It puts marketing in perspective as a relatively young discipline where development is accelerating fast. Marketing surely is more complicated now than it was 10 years ago. It shows that much of what we're using as marketers today is relatively new and untested. We should probably be more humble and learn to use these new channels rather than starting to define best practices.