[laughinghan]

I strongly disagree with the analogy between CDNs and ISPs. ISPs operate on the user-side, they have no business filtering what the user sees. CDNs operate on the server-side, they have the power and responsibility to decide who they want to do business with, and to not provide services to harmful customers—I'm sure we agree ISPs shouldn't provide services to harmful customers either (spam, malware, phishing, etc).