Thomas,
I think this is very complex subject that comes to (my personal) conclusion that simple advertising is not that effective any more in this crowded social world. There is FB, YT, channels, users walls and all the accompanying technologies I am really not familiar with, because I am simply too old
. As far as my trivial learning goes on this topic, only particularly crafted and targeted marketing campaigns seem to make sense today. And this is why I'd rather go for marketing professional to do its job. I am now in the process of evaluating/deciding some options of this maze, so I hope I'll be provisioned with some knowledge soon.
But still, happy clients are, and will be, of the most value.
Art