I was excited to see Shawn Farkas' article available on "Discover Techniques for Safely Hosting Untrusted Add-Ins with the .NET Framework 2.0", which covers what I presented at VSLive! Boston in written form (its good to see Shawn move this from his blog to a comprehensive article, too). Then, I realized the article is part of the annual MSDN Magazine Security-focused issue I look forward to each year:
Be sure to read this one from cover to cover.