Great article. I was shocked to read that myspace was charging between 50-100k for one week of advertising. Do you know what the ROI is on that? How many 'adds' are app developers seeing? I develop apps for both facebook and myspace and have definitely found more cost-effective means of advertising. For facebook I have rotated between several networks, not really finding a great one. For myspace, I am using AdParlor and they seem to really bring in the application 'adds' for a low cost. Do you know of any other cost-effective means of advertising in the myspace platform?