Yea, that'll take a while. We'll see about testing. The proposed effect can be strong if each next comment is affected by the previous, so that the initial disturbance does not 'dissolve' in a larger number. But i kind of doubt. I don't really care whole ton for votes, i generally take them as a measure of clarity of the point, but any priming most definitely would result in their lower usefulness as a gauge of clarity. Also theres apparently voting via recent comments thread; tbh i nearly forgot you can read comments expanded, as it does seem not to be very interesting due to majority of comments being brief and meaningless outside context.