Think Progress:

John McCain has made clear that he doesn’t like the blogosphere.

Now he has introduced legislation that would treat blogs like Internet service providers and hold them responsible for all activity in the comments sections and user profiles. Some highlights of the legislation:

– Commercial websites and personal blogs “would be required to report illegal images or videos posted by their users or pay fines of up to $300,000.”

– Internet service providers (ISPs) are already required to issue such reports, but under McCain’s legislation, bloggers with comment sections may face “even stiffer penalties” than ISPs.

— Social networking sites will be forced to take “effective measures” — such as deleting user profiles — to remove any website that is “associated” with a sex offender. Sites may include not only Facebook and MySpace, but also Amazon.com, which permits author profiles and personal lists, and blogs like DailyKos, which allows users to sign up for personal diaries.
(emphasis not mine)

I can see the bumper sticker now:

Sen. John McCain — Keeping Your Children Safe from Bloggers! 

Looks like I’m going to have to start running background checks on all you commenters. And please, stop with the illegal images and videos already!