I can think of a couple.
The first one that comes to mind is to combine email marketing with article marketing. I haven't done article marketing for a while. I don't even know how popular it is since the Easter farm massacre. But having a well organized list and email makreting campaign can be SO powerful!
The second is to take action. That's always the most important thing. Don't dilly dally in the academic side of IM for too long. It will cost you.
Why don't you share yours?