It's an interesting example of how easy this form of communication can get heated. I'm inclined to agree with Mr. Quick on this particular exchange, Sara knew exactly what she was doing from the start and tried to use the 'I keeeeeeeeeeed' dodge (Triumph is the only one who can get away with that) to have her cake and eat it, too.
Still I probably would have just assumed most people recognize when someone is being a jerk and leave it at that without dealing with the back and forth escalation, but to each their own.
The really funny part is that the politics of Sara's blog is similar to Mr. Quick's blog (though not the general level of writing, or popularity), so it's not a matter of the usual left/right conflict, instead it's a good old fashion (possibly gender based) personality conflict.