You asked about censorship and then deleted an article on the front page a few days ago that had some interesting comments. It was a stupid article, to be sure, but did you have to completely delete it? There's no "send to second page" button in the moderation options?
My feelings: Do not ban any content, ever. Only delete things after they are submitted if they are off topic or ridiculously stupid.
Instead ban the users who vote those stupid things up, or diminish their voting "worth".
Sometimes, I like reading Valleywag stuff. It's certainly on topic, even if it's linkbait or pure lies. It's the comic, tabloid, side of the industry we're in. Maybe you can add a tag that says "tabloid" next to the Valleywag domain instead of downright banning it.
If you have to ask about being accused of censorship, something is seriously wrong. Also, using a poll like this is extremely ineffective. The mob is, as a whole, foolish. I imagine a ton of people are clicking "yes" simply due to a negative reaction to Valleywag, rather than understanding that censoring Valleywag may start a trend here that could get out of hand...