KD Paine has got it going on. I had just re-watched a video that she had done over at Jason Falls‘s blog awhile back about social media and ROI and since I’ve been struggling with it again, I decided to hop over to her site and found that she had just put this deck up. Very worthy to share with others!
Direct Marketing Observations
Digital and Social Media Marketing Insights from Marc Meyer
Direct Marketing Observations 
I think that Twitter has become a very important tool in marketing. Next quarter the University of Washington is offering a research/class on Twitter, through the Master of Communication in Digital Media.