So another fair way would have been to day: Moderates are more moderate on line. But not as interesting. :-) And if you dig in, that finding above is somewhat ambiguous.
I thought this was interesting as well: "38% of SNS users have posted positive comments in response to a political post or status update from someone else. Democratic users of SNS (48%) are much more likely to have done this than Republicans (33%) and Independents (37%)."