Rogers says that Scoble had less of an impact on MS than you might think:
Though he's been touted as a direct channel between the user/developer community and Microsoft, Scoble was heavy on ain't-it-cool and light on criticism. Considering my recent experience with a compromised PC, I was curious how much he's said about the company's biggest problem: the long-running inability to make Windows secure, no matter how many times they launch new initiatives to address the issue.
The answer: bupkiss.
I'd call this one of those perception vs. reality things. In the security arena, MS is still a laggard, mostly due to the legacy of sub-optimal decisions that were made years ago, when few people saw what was coming down the pike. Scoble did have little to say on that, but I'd say that his perceived impact on MS was pretty big - people - including me - felt like the company was more responsive, and got a real feel for it being more than a B0rg Cube.
That's a hole that MS will have a hard time plugging - quite possibly, more trouble than they have with security issues.