My /etc/hosts file already blocks Facebook's widgets, so I don't see anything in the comments section on TechCrunch. That's a feature and improvement as far as I'm concerned.
TechCrunch kind of hinted at it, but I will never use Facebook to leave a comment on a website (or log-into a site for that matter). I keep my Facebook account separate from everything because I don't trust Zuck whatsoever.
Update: in addition to blocking in /etc/hosts, I run Facebook Disconnect in Chrome which gets rid of all those Like buttons and other annoyances that run on the main Facebook domain and can't be blocked in /etc/hosts without also blocking your access to Facebook directly. It's a fantastic extension.
https://chrome.google.com/webstore/detail/ejpepffjfmamnambag...